Add quickfixes to clear tool problems

src/sidebar.ts

@@ -3,8 +3,7 @@ import {
     TextDocument
 } from "vscode";
 import {
-    CancellationToken,
-    NotificationType,
+    ExecuteCommandRequest,
     ProgressType,
     TextDocumentIdentifier
 } from "vscode-languageclient/node";
@@ -222,7 +221,7 @@ export class ModestSidebarProvider implements vscode.WebviewViewProvider {
                     break;
                 }
                 case "clearToolProblems": {
-                    client?.sendRequest("modest/clearToolProblems");
+                    client?.sendRequest(ExecuteCommandRequest.type, {command: "modest/clearToolProblems"});
                     break;
                 }
             }