Method onModeChanged

apps/cli/src/agent/extension-client.ts:336–338

* Convenience method: Subscribe only to mode changes.

(listener: (event: ModeChangedEvent) => void)

	 * Convenience method: Subscribe only to mode changes.
	 */
	onModeChanged(listener: (event: ModeChangedEvent) => void): () => void {
		return this.on("modeChanged", listener)
	}

	// ===========================================================================
	// Response Methods - Send actions to the extension