Support custom init options for Rust Analyzer

Author: Xanewok

package.json

@@ -464,6 +464,12 @@
                     "default": true,
                     "description": "Show additional context in hover tooltips when available. This is often the type local variable declaration.",
                     "scope": "resource"
+                },
+                "rust.rust-analyzer": {
+                    "type": "object",
+                    "default": {},
+                    "description": "Settings passed down to rust-analyzer server",
+                    "scope": "resource"
                 }
             }
         }

src/rustAnalyzer.ts

@@ -203,10 +203,8 @@ export async function createLanguageClient(
     // synchronize: { configurationSection: 'rust' },
     // Controls when to focus the channel rather than when to reveal it in the drop-down list
     revealOutputChannelOn: config.revealOutputChannelOn,
-    initializationOptions: {
-      omitInitBuild: true,
-      cmdRun: true,
-    },
+    // TODO: Support and type out supported settings by the rust-analyzer
+    initializationOptions: vs.workspace.getConfiguration('rust.rust-analyzer'),
   };
 
   INSTANCE = new lc.LanguageClient(