Support component tree negative filter

[geddski]

What problem does this feature solve?

When looking at the component tree there are often wrapper components that you don't need to look for, that clutter the view.

It would be awesome if you could filter out certain components by a negative search pattern, just like Chrome devtools does in the console and network views.

So if I typed -loading I would expect to see my full DOM tree but with the <loading> components hidden. Importantly: I would still see the children of the <loading> components.

[alexzhang1030]

We need an EXCLUDE filter on the component tree. PR welcome, or I will find some free time to do this.