Expose context server settings to extensions (#20555)

This PR exposes context server settings to extensions.

Extensions can use `ContextServerSettings::for_project` to get the
context server settings for the current project.

The `experimental.context_servers` setting has been removed and replaced
with the `context_servers` setting (which is now an object instead of an
array).

Release Notes:

- N/A

---------

Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/extension_host/src/wasm_host/wit.rs

@@ -4,7 +4,6 @@ mod since_v0_0_6;
 mod since_v0_1_0;
 mod since_v0_2_0;
 use lsp::LanguageServerName;
-// use indexed_docs::IndexedDocsDatabase;
 use release_channel::ReleaseChannel;
 use since_v0_2_0 as latest;
 
@@ -27,7 +26,7 @@ pub use latest::{
         Completion, CompletionKind, CompletionLabelDetails, InsertTextFormat, Symbol, SymbolKind,
     },
     zed::extension::slash_command::{SlashCommandArgumentCompletion, SlashCommandOutput},
-    CodeLabel, CodeLabelSpan, Command, Range, SlashCommand,
+    CodeLabel, CodeLabelSpan, Command, ExtensionProject, Range, SlashCommand,
 };
 pub use since_v0_0_4::LanguageServerConfig;
 
@@ -389,10 +388,11 @@ impl Extension {
         &self,
         store: &mut Store<WasmState>,
         context_server_id: Arc<str>,
+        project: Resource<ExtensionProject>,
     ) -> Result<Result<Command, String>> {
         match self {
             Extension::V020(ext) => {
-                ext.call_context_server_command(store, &context_server_id)
+                ext.call_context_server_command(store, &context_server_id, project)
                     .await
             }
             Extension::V001(_) | Extension::V004(_) | Extension::V006(_) | Extension::V010(_) => {