Allow deleting watch entries with a single click

[Tyriar]

I was an x on watch like there is on breakpoints.

I notice that devtools has a x button on hover:

[babakks]

@roblourens I take this if it's okay.

[Tyriar]

@babakks should be good to take since it has help wanted, that would be great 👍

[roblourens]

I would appreciate a PR, thanks. I think you can copy the way this method override works in the variables tree:

vscode/src/vs/workbench/contrib/debug/browser/variablesView.ts

Line 440 in bbe7b54

protected override renderActionBar(actionBar: ActionBar, expression: IExpression, data: IExpressionTemplateData) {

to the watch tree renderer:

vscode/src/vs/workbench/contrib/debug/browser/watchExpressionsView.ts

Line 267 in bbe7b54

export class WatchExpressionsRenderer extends AbstractExpressionsRenderer {

The actionbar doesn't show any actions in the variables view by default - the builtin actions only show up in the context menu. Maybe some extension contributes something to that actionbar. But in any case, looks like the AbstractExpressionsRenderer has the ability to render an actionbar already.

[babakks]

@roblourens Thanks for the hint. I've just submitted the PR. Could you please check it?