Supermaven (#10788)

Adds a supermaven provider for completions. There are various other
refactors amidst this branch, primarily to make copilot no longer a
dependency of project as well as show LSP Logs for global LSPs like
copilot properly.

This feature is not enabled by default. We're going to seek to refine it
in the coming weeks.

Release Notes:

- N/A

---------

Co-authored-by: Antonio Scandurra <me@as-cii.com>
Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Max <max@zed.dev>
Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/rpc/proto/zed.proto

@@ -207,7 +207,7 @@ message Envelope {
         GetCachedEmbeddings get_cached_embeddings = 189;
         GetCachedEmbeddingsResponse get_cached_embeddings_response = 190;
         ComputeEmbeddings compute_embeddings = 191;
-        ComputeEmbeddingsResponse compute_embeddings_response = 192; // current max
+        ComputeEmbeddingsResponse compute_embeddings_response = 192;
 
         UpdateChannelMessage update_channel_message = 170;
         ChannelMessageUpdate channel_message_update = 171;
@@ -238,7 +238,10 @@ message Envelope {
         ValidateDevServerProjectRequest validate_dev_server_project_request = 194;
         DeleteDevServer delete_dev_server = 195;
         OpenNewBuffer open_new_buffer = 196;
-        DeleteDevServerProject delete_dev_server_project = 197; // Current max
+        DeleteDevServerProject delete_dev_server_project = 197;
+
+        GetSupermavenApiKey get_supermaven_api_key = 198;
+        GetSupermavenApiKeyResponse get_supermaven_api_key_response = 199; // current max
     }
 
     reserved 158 to 161;
@@ -2084,3 +2087,9 @@ message LspResponse {
         GetCodeActionsResponse get_code_actions_response = 2;
     }
 }
+
+message GetSupermavenApiKey {}
+
+message GetSupermavenApiKeyResponse {
+    string api_key = 1;
+}

crates/rpc/src/proto.rs

@@ -201,6 +201,8 @@ messages!(
     (GetProjectSymbolsResponse, Background),
     (GetReferences, Background),
     (GetReferencesResponse, Background),
+    (GetSupermavenApiKey, Background),
+    (GetSupermavenApiKeyResponse, Background),
     (GetTypeDefinition, Background),
     (GetTypeDefinitionResponse, Background),
     (GetImplementation, Background),
@@ -360,6 +362,7 @@ request_messages!(
     (GetPrivateUserInfo, GetPrivateUserInfoResponse),
     (GetProjectSymbols, GetProjectSymbolsResponse),
     (GetReferences, GetReferencesResponse),
+    (GetSupermavenApiKey, GetSupermavenApiKeyResponse),
     (GetTypeDefinition, GetTypeDefinitionResponse),
     (GetUsers, UsersResponse),
     (IncomingCall, Ack),