Use clang-format as the default sketch formatter.

- Bumped `clangd` to `14.0.0`,
 - Can use `.clang-format` from:
   - current sketch folder,
   - `~/.arduinoIDE/.clang-format`,
   - `directories#data/.clang-format`, or
   - falls back to default formatter styles.

Closes #1009
Closes #566

Signed-off-by: Akos Kitta <a.kitta@arduino.cc>

arduino-ide-extension/src/browser/theia/monaco/monaco-formatting-conflicts.ts

@@ -0,0 +1,12 @@
+import { injectable } from '@theia/core/shared/inversify';
+import { MonacoFormattingConflictsContribution as TheiaMonacoFormattingConflictsContribution } from '@theia/monaco/lib/browser/monaco-formatting-conflicts';
+
+@injectable()
+export class MonacoFormattingConflictsContribution extends TheiaMonacoFormattingConflictsContribution {
+  override async initialize(): Promise<void> {
+    // NOOP - does not register a custom formatting conflicts selects.
+    // Does not get and set formatter preferences when selecting from multiple formatters.
+    // Does not show quick-pick input when multiple formatters are available for the text model.
+    // Uses the default behavior from VS Code: https://github.com/microsoft/vscode/blob/fb9f488e51af2e2efe95a34f24ca11e1b2a3f744/src/vs/editor/editor.api.ts#L19-L21
+  }
+}