debugger: More tidy up for SSH (#28993)

Split `locator` out of DebugTaskDefinition to make it clearer when
location needs to happen.

Release Notes:

- N/A

---------

Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Anthony <anthony@zed.dev>
Co-authored-by: Cole Miller <m@cole-miller.net>

crates/proto/proto/debugger.proto

@@ -508,7 +508,6 @@ enum DapStackPresentationHint {
     Subtle = 2;
     StackUnknown = 3;
 }
-
 message DapModule {
     DapModuleId id = 1;
     string name = 2;
@@ -522,9 +521,62 @@ message DapModule {
     optional string address_range = 10;
 }
 
+message DebugTaskDefinition {
+    string adapter = 1;
+    string label = 2;
+    oneof request {
+        DebugLaunchRequest debug_launch_request = 3;
+        DebugAttachRequest debug_attach_request = 4;
+    }
+    optional string initialize_args = 5;
+    optional TcpHost tcp_connection = 6;
+    optional bool stop_on_entry = 7;
+}
+
+message TcpHost {
+    optional uint32 port = 1;
+    optional string host = 2;
+    optional uint64 timeout = 3;
+}
+
+message DebugLaunchRequest {
+    string program = 1;
+    optional string cwd = 2;
+    repeated string args = 3;
+}
+
+message DebugAttachRequest {
+    uint32 process_id = 1;
+}
+
 message DapModuleId {
     oneof id {
         uint32 number = 1;
         string string = 2;
     }
 }
+
+message GetDebugAdapterBinary {
+    uint64 project_id = 1;
+    DebugTaskDefinition task = 2;
+}
+
+message DebugAdapterBinary {
+    string command = 1;
+    repeated string arguments = 2;
+    map<string, string> envs = 3;
+    optional string cwd = 4;
+    optional TcpHost connection = 5;
+    string configuration = 7;
+    LaunchType launch_type = 8;
+    enum LaunchType {
+        Attach = 0;
+        Launch = 1;
+    }
+}
+
+message RunDebugLocator {
+    uint64 project_id = 1;
+    string locator = 2;
+    DebugTaskDefinition task = 3;
+}

crates/proto/proto/zed.proto

@@ -380,7 +380,12 @@ message Envelope {
         StopLanguageServers stop_language_servers = 336;
 
         LspExtRunnables lsp_ext_runnables = 337;
-        LspExtRunnablesResponse lsp_ext_runnables_response = 338; // current max
+        LspExtRunnablesResponse lsp_ext_runnables_response = 338;
+
+        GetDebugAdapterBinary get_debug_adapter_binary = 339;
+        DebugAdapterBinary debug_adapter_binary = 340;
+        RunDebugLocator run_debug_locator = 341;
+        DebugTaskDefinition debug_task_definition = 342; // current max
     }
 
     reserved 87 to 88;

crates/proto/src/proto.rs

@@ -302,6 +302,10 @@ messages!(
     (GitDiff, Background),
     (GitDiffResponse, Background),
     (GitInit, Background),
+    (GetDebugAdapterBinary, Background),
+    (DebugAdapterBinary, Background),
+    (RunDebugLocator, Background),
+    (DebugTaskDefinition, Background),
 );
 
 request_messages!(
@@ -460,6 +464,8 @@ request_messages!(
     (GitDiff, GitDiffResponse),
     (GitInit, Ack),
     (ToggleBreakpoint, Ack),
+    (GetDebugAdapterBinary, DebugAdapterBinary),
+    (RunDebugLocator, DebugTaskDefinition),
 );
 
 entity_messages!(
@@ -579,6 +585,8 @@ entity_messages!(
     GitInit,
     BreakpointsForFile,
     ToggleBreakpoint,
+    RunDebugLocator,
+    GetDebugAdapterBinary,
 );
 
 entity_messages!(