Add folder based mappings to the `additionalFileMapping` setting

[Nidoxs]

I would love the ability to specify something like this where all files within the specified folder have the specified icon.

"vscord.behaviour.additionalFileMapping": {
   "src/ui/react-components/*": "jsx"
}

This is particularly useful for situations where you want to convey that you're working on a certain file, but the circumstance is a little too specific for the extension to pick up on it. For example, I'm using React but not in a JS or TS file yet I still want to convey that I'm working on React files.

It's unclear to me whether this feature would require some sizeable refactoring to core parts of the extension's source. I'm also unsure if this is possible already within the extension (i did take a look at the source, but couldn't find anything that stood out) so I thought I'd make this issue.

[xhayper]

This is such an amazing idea, i will see if i can get it implemented

[Nidoxs]

Thank you so much for the speedy response! Yeah, I think it would be really cool to be able to do this.