extension_host: Use wasmtime incremental compilation (#30948)

Builds on top of https://github.com/zed-industries/zed/pull/30942

This turns on incremental compilation and decreases extension
compilation times by up to another 41%
Putting us at roughly 92% improved extension load times from what is in
the app today.

Because we only have a static engine, I can't reset the cache between
every run. So technically the benchmarks are always running with a
warmed cache. So the first extension we load will take the 8.8ms, and
then any subsequent extensions will be closer to the measured time in
this benchmark.

This is also measuring the entire load process, not just the
compilation. However, since this is the loading we likely think of when
thinking about extensions, I felt it was likely more helpful to see the
impact on the overall time.

This works because our extensions are largely the same Wasm bytecode
(SDK code + std lib functions etc) with minor changes in the trait impl.
The more different that extensions implementation is, there will be less
benefit, however, there will always be a large part of every extension
that is always the same across extensions, so this should be a speedup
regardless.

I used `moka` to provide a bound to the cache. We could use a bare
`DashMap`, however if there was some issue this could lead to a memory
leak. `moka` has some slight overhead, but makes sure that we don't go
over 32mb while using an LRU-style mechanism for deciding which
compilation artifacts to keep.

I measured our current extensions to take roughly 512kb in the cache.
Which means with a cap of 32mb, we can keep roughly 64 *completely
novel* extensions with no overlap. Since our extensions will have more
overlap than this though, we can actually keep much more in the cache
without having to worry about it.

#### Before:

```
load/1                  time:   [8.8301 ms 8.8616 ms 8.8931 ms]
                        change: [-0.1880% +0.3221% +0.8679%] (p = 0.23 > 0.05)
                        No change in performance detected.
```

#### After:

```
load/1                  time:   [5.1575 ms 5.1726 ms 5.1876 ms]
                        change: [-41.894% -41.628% -41.350%] (p = 0.00 < 0.05)
                        Performance has improved.
```

Release Notes:

- N/A

tooling/workspace-hack/Cargo.toml

@@ -44,7 +44,9 @@ chrono = { version = "0.4", features = ["serde"] }
 clap = { version = "4", features = ["cargo", "derive", "string", "wrap_help"] }
 clap_builder = { version = "4", default-features = false, features = ["cargo", "color", "std", "string", "suggestions", "usage", "wrap_help"] }
 concurrent-queue = { version = "2" }
+cranelift-codegen = { version = "0.116", default-features = false, features = ["host-arch", "incremental-cache", "std", "timing", "unwind"] }
 crc32fast = { version = "1" }
+crossbeam-epoch = { version = "0.9" }
 crossbeam-utils = { version = "0.8" }
 deranged = { version = "0.4", default-features = false, features = ["powerfmt", "serde", "std"] }
 digest = { version = "0.10", features = ["mac", "oid", "std"] }
@@ -95,6 +97,7 @@ prost-types = { version = "0.9" }
 rand-c38e5c1d305a1b54 = { package = "rand", version = "0.8", features = ["small_rng"] }
 rand_chacha = { version = "0.3" }
 rand_core = { version = "0.6", default-features = false, features = ["std"] }
+regalloc2 = { version = "0.11", features = ["checker", "enable-serde"] }
 regex = { version = "1" }
 regex-automata = { version = "0.4" }
 regex-syntax = { version = "0.8" }
@@ -132,8 +135,8 @@ url = { version = "2", features = ["serde"] }
 uuid = { version = "1", features = ["serde", "v4", "v5", "v7"] }
 wasm-encoder = { version = "0.221", features = ["wasmparser"] }
 wasmparser = { version = "0.221" }
-wasmtime = { version = "29", default-features = false, features = ["async", "component-model", "cranelift", "demangle", "gc-drc", "parallel-compilation"] }
-wasmtime-cranelift = { version = "29", default-features = false, features = ["component-model", "gc-drc"] }
+wasmtime = { version = "29", default-features = false, features = ["async", "component-model", "cranelift", "demangle", "gc-drc", "incremental-cache", "parallel-compilation"] }
+wasmtime-cranelift = { version = "29", default-features = false, features = ["component-model", "gc-drc", "incremental-cache"] }
 wasmtime-environ = { version = "29", default-features = false, features = ["compile", "component-model", "demangle", "gc-drc"] }
 winnow = { version = "0.7", features = ["simd"] }
 
@@ -168,7 +171,9 @@ chrono = { version = "0.4", features = ["serde"] }
 clap = { version = "4", features = ["cargo", "derive", "string", "wrap_help"] }
 clap_builder = { version = "4", default-features = false, features = ["cargo", "color", "std", "string", "suggestions", "usage", "wrap_help"] }
 concurrent-queue = { version = "2" }
+cranelift-codegen = { version = "0.116", default-features = false, features = ["host-arch", "incremental-cache", "std", "timing", "unwind"] }
 crc32fast = { version = "1" }
+crossbeam-epoch = { version = "0.9" }
 crossbeam-utils = { version = "0.8" }
 deranged = { version = "0.4", default-features = false, features = ["powerfmt", "serde", "std"] }
 digest = { version = "0.10", features = ["mac", "oid", "std"] }
@@ -224,6 +229,7 @@ quote = { version = "1" }
 rand-c38e5c1d305a1b54 = { package = "rand", version = "0.8", features = ["small_rng"] }
 rand_chacha = { version = "0.3" }
 rand_core = { version = "0.6", default-features = false, features = ["std"] }
+regalloc2 = { version = "0.11", features = ["checker", "enable-serde"] }
 regex = { version = "1" }
 regex-automata = { version = "0.4" }
 regex-syntax = { version = "0.8" }
@@ -267,8 +273,8 @@ url = { version = "2", features = ["serde"] }
 uuid = { version = "1", features = ["serde", "v4", "v5", "v7"] }
 wasm-encoder = { version = "0.221", features = ["wasmparser"] }
 wasmparser = { version = "0.221" }
-wasmtime = { version = "29", default-features = false, features = ["async", "component-model", "cranelift", "demangle", "gc-drc", "parallel-compilation"] }
-wasmtime-cranelift = { version = "29", default-features = false, features = ["component-model", "gc-drc"] }
+wasmtime = { version = "29", default-features = false, features = ["async", "component-model", "cranelift", "demangle", "gc-drc", "incremental-cache", "parallel-compilation"] }
+wasmtime-cranelift = { version = "29", default-features = false, features = ["component-model", "gc-drc", "incremental-cache"] }
 wasmtime-environ = { version = "29", default-features = false, features = ["compile", "component-model", "demangle", "gc-drc"] }
 winnow = { version = "0.7", features = ["simd"] }