Fix remoting things (#19587)

- Fixes modal closing when using the remote modal folder 
- Fixes a bug with local terminals where they could open in / instead of
~
- Fixes a bug where SSH connections would continue running after their
window is closed
- Hides SSH Terminal process details from Zed UI
- Implement `cmd-o` for remote projects
- Implement LanguageServerPromptRequest for remote LSPs

Release Notes:

- N/A

crates/proto/src/proto.rs

@@ -373,6 +373,8 @@ messages!(
     (GetPermalinkToLine, Foreground),
     (GetPermalinkToLineResponse, Foreground),
     (FlushBufferedMessages, Foreground),
+    (LanguageServerPromptRequest, Foreground),
+    (LanguageServerPromptResponse, Foreground),
 );
 
 request_messages!(
@@ -500,6 +502,7 @@ request_messages!(
     (OpenServerSettings, OpenBufferResponse),
     (GetPermalinkToLine, GetPermalinkToLineResponse),
     (FlushBufferedMessages, Ack),
+    (LanguageServerPromptRequest, LanguageServerPromptResponse),
 );
 
 entity_messages!(
@@ -577,6 +580,7 @@ entity_messages!(
     HideToast,
     OpenServerSettings,
     GetPermalinkToLine,
+    LanguageServerPromptRequest
 );
 
 entity_messages!(