Add the ability to edit remote directories over SSH (#14530)

This is a first step towards allowing you to edit remote projects
directly over SSH. We'll start with a pretty bare-bones feature set, and
incrementally add further features.

### Todo

Distribution
* [x] Build nightly releases of `zed-remote-server` binaries
    * [x] linux (arm + x86)
    * [x] mac (arm + x86)
* [x] Build stable + preview releases of `zed-remote-server`
* [x] download and cache remote server binaries as needed when opening
ssh project
* [x] ensure server has the latest version of the binary


Auth
* [x] allow specifying password at the command line
* [x] auth via ssh keys
* [x] UI password prompt

Features
* [x] upload remote server binary to server automatically
* [x] opening directories
* [x] tracking file system updates
* [x] opening, editing, saving buffers
* [ ] file operations (rename, delete, create)
* [ ] git diffs
* [ ] project search

Release Notes:

- N/A

---------

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

crates/project/src/buffer_store.rs

@@ -705,7 +705,7 @@ impl BufferStore {
 
         let operations = buffer.update(cx, |b, cx| b.serialize_ops(None, cx))?;
         let operations = operations.await;
-        let state = buffer.update(cx, |buffer, _| buffer.to_proto())?;
+        let state = buffer.update(cx, |buffer, cx| buffer.to_proto(cx))?;
 
         let initial_state = proto::CreateBufferForPeer {
             project_id,