Allow styling of the gutter

[brdoney]

I really like the look of the Bracket Pair Colorizer extension, so I thought I would try to replicate its look with this extension, more or less. However, the following image is as close as I could get as of now, with the area in red representing an area that I couldn't style but would like to:

Given that there's currently no vscode.DecorationRenderOptions or other way to style the gutter between matched tags (from my understanding), I think providing a way to toggle/style colouring in this gutter area would be fantastic.

[benatshippabo]

@vincaslt just checking in, is this feature in the extension now or is it put on hold for now?

[vincaslt]

It's on hold, I'm busy with other stuff, and most likely will continue to be in the nearest feature. If anyone wants to give it a shot, go ahead