Use livekit's Rust SDK instead of their swift SDK (#13343)

See https://github.com/livekit/rust-sdks/pull/355

Todo:

* [x] make `call` / `live_kit_client` crates use the livekit rust sdk
* [x] create a fake version of livekit rust API for integration tests
* [x] capture local audio
* [x] play remote audio
* [x] capture local video tracks
* [x] play remote video tracks
* [x] tests passing
* bugs
* [x] deafening does not work
(https://github.com/livekit/rust-sdks/issues/359)
* [x] mute and speaking status are not replicated properly:
(https://github.com/livekit/rust-sdks/issues/358)
* [x] **linux** - crash due to symbol conflict between WebRTC's
BoringSSL and libcurl's openssl
(https://github.com/livekit/rust-sdks/issues/89)
* [x] **linux** - libwebrtc-sys adds undesired dependencies on `libGL`
and `libXext`
* [x] **windows** - linker error, maybe related to the C++ stdlib
(https://github.com/livekit/rust-sdks/issues/364)
        ```
libwebrtc_sys-54978c6ad5066a35.rlib(video_frame.obj) : error LNK2038:
mismatch detected for 'RuntimeLibrary': value 'MT_StaticRelease' doesn't
match value 'MD_DynamicRelease' in
libtree_sitter_yaml-df6b0adf8f009e8f.rlib(2e40c9e35e9506f4-scanner.o)
        ```
    * [x] audio problems

Release Notes:

- Switch from Swift to Rust LiveKit SDK 🦀

---------

Co-authored-by: Mikayla Maki <mikayla@zed.dev>
Co-authored-by: Conrad Irwin <conrad@zed.dev>
Co-authored-by: Kirill Bulatov <kirill@zed.dev>
Co-authored-by: Michael Sloan <michael@zed.dev>

crates/collab/src/tests/following_tests.rs

@@ -9,10 +9,9 @@ use collab_ui::{
 use editor::{Editor, ExcerptRange, MultiBuffer};
 use gpui::{
     point, BackgroundExecutor, BorrowAppContext, Context, Entity, SharedString, TestAppContext,
-    View, VisualContext, VisualTestContext,
+    TestScreenCaptureSource, View, VisualContext, VisualTestContext,
 };
 use language::Capability;
-use live_kit_client::MacOSDisplay;
 use project::WorktreeSettings;
 use rpc::proto::PeerId;
 use serde_json::json;
@@ -429,17 +428,17 @@ async fn test_basic_following(
     );
 
     // Client B activates an external window, which causes a new screen-sharing item to be added to the pane.
-    let display = MacOSDisplay::new();
+    let display = TestScreenCaptureSource::new();
     active_call_b
         .update(cx_b, |call, cx| call.set_location(None, cx))
         .await
         .unwrap();
+    cx_b.set_screen_capture_sources(vec![display]);
     active_call_b
         .update(cx_b, |call, cx| {
-            call.room().unwrap().update(cx, |room, cx| {
-                room.set_display_sources(vec![display.clone()]);
-                room.share_screen(cx)
-            })
+            call.room()
+                .unwrap()
+                .update(cx, |room, cx| room.share_screen(cx))
         })
         .await
         .unwrap();