Following the review discussion, the code inside of codeActionModel.ts has been changed so that when the code actions are fetched through the lightbulb menu (trigger type auto), the following is verified:

- If the lightbulb setting is on, then return selection
- If the lightbulb setting is onCode, then do initial filtering that was done    
- If the lightbulb setting is off, then return undefined

Additionally the following listener is added in order to trigger an update of the UI when the configuration changes for the lightbulb setting

this._register(this._editor.onDidChangeConfiguration((e) => {
	if (e.hasChanged(EditorOption.lightbulb)) {
		this._update();
	}
}));

ll looks good to me. We can merge the PR if @alexdima and @justschen like the direction

Added the review changes