Add Gleam LSP and formatter (#5514)

packages/opencode/src/lsp/server.ts

@@ -1509,4 +1509,22 @@ export namespace LSPServer {
       }
     },
   }
+
+  export const Gleam: Info = {
+    id: "gleam",
+    extensions: [".gleam"],
+    root: NearestRoot(["gleam.toml"]),
+    async spawn(root) {
+      const gleam = Bun.which("gleam")
+      if (!gleam) {
+        log.info("gleam not found, please install gleam first")
+        return
+      }
+      return {
+        process: spawn(gleam, ["lsp"], {
+          cwd: root,
+        }),
+      }
+    },
+  }
 }