Implemented filter and update all for libs/boards.

Closes #177
Closes #1188

Co-authored-by: Francesco Spissu <f.spissu@arduino.cc>
Co-authored-by: Per Tillisch <p.tillisch@arduino.cc>
Co-authored-by: Akos Kitta <a.kitta@arduino.cc>

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

arduino-ide-extension/src/browser/theia/preferences/preference-editor-widget.ts

@@ -0,0 +1,19 @@
+import { injectable } from '@theia/core/shared/inversify';
+import { PreferencesEditorWidget as TheiaPreferencesEditorWidget } from '@theia/preferences/lib/browser/views/preference-editor-widget';
+
+@injectable()
+export class PreferencesEditorWidget extends TheiaPreferencesEditorWidget {
+  protected override resetScroll(
+    nodeIDToScrollTo?: string,
+    filterWasCleared = false
+  ): void {
+    if (this.scrollBar) {
+      // Absent on widget creation
+      this.doResetScroll(nodeIDToScrollTo, filterWasCleared);
+    } else {
+      // NOOP
+      // Unlike Theia, IDE2 does not start multiple tasks to check if the scrollbar is ready to reset it.
+      // If the "scroll reset" request arrived before the existence of the scrollbar, what to reset?
+    }
+  }
+}