feat: semantic highlight

Ref: arduino/vscode-arduino-tools#43
Signed-off-by: Akos Kitta <a.kitta@arduino.cc>

arduino-ide-extension/src/browser/arduino-ide-frontend-module.ts

@@ -371,6 +371,7 @@ import { DebugSessionWidget } from '@theia/debug/lib/browser/view/debug-session-
 import { DebugConfigurationWidget } from './theia/debug/debug-configuration-widget';
 import { DebugConfigurationWidget as TheiaDebugConfigurationWidget } from '@theia/debug/lib/browser/view/debug-configuration-widget';
 import { DebugToolBar } from '@theia/debug/lib/browser/view/debug-toolbar-widget';
+import { InoHighlight } from './contributions/ino-highlight';
 
 // Hack to fix copy/cut/paste issue after electron version update in Theia.
 // https://github.com/eclipse-theia/theia/issues/12487
@@ -767,6 +768,7 @@ export default new ContainerModule((bind, unbind, isBound, rebind) => {
   Contribution.configure(bind, UpdateArduinoState);
   Contribution.configure(bind, BoardsDataMenuUpdater);
   Contribution.configure(bind, AutoSelectProgrammer);
+  Contribution.configure(bind, InoHighlight);
 
   bindContributionProvider(bind, StartupTaskProvider);
   bind(StartupTaskProvider).toService(BoardsServiceProvider); // to reuse the boards config in another window

arduino-ide-extension/src/browser/contributions/format.ts

@@ -1,4 +1,3 @@
-import { MaybePromise } from '@theia/core';
 import { inject, injectable } from '@theia/core/shared/inversify';
 import * as monaco from '@theia/monaco-editor-core';
 import { Formatter } from '../../common/protocol/formatter';
@@ -15,13 +14,14 @@ export class Format
   @inject(Formatter)
   private readonly formatter: Formatter;
 
-  override onStart(): MaybePromise<void> {
+  override onStart(): void {
     monaco.languages.registerDocumentRangeFormattingEditProvider(
       InoSelector,
       this
     );
     monaco.languages.registerDocumentFormattingEditProvider(InoSelector, this);
   }
+
   async provideDocumentRangeFormattingEdits(
     model: monaco.editor.ITextModel,
     range: monaco.Range,