Certain files should not be allowed for highlighting

[hugodahl]

As a developer, there are several classes of files which I do not want to have accessible for highlighting

• Secrets
• External files, such as ./node_modules/**
• Generated/Compiled/Transpiled files, such as *.ts => *.js

[SasquatchXYZ]

Proposed: reading from .gitingore or a .twitchignore file to exclude files/file types from Twitch chat accessibility.

[parithon]

I have included the necessary functionality to accomplish this enhancement using a .twitchignore document but I'm waiting for @clarkio to finish his changes to the source before I publish a new PR.

If you want to test it, I pushed the changes to my repo here.

I've removed the branch for now.

[clarkio]

Should we introduce a separate file for this or leverage something like .gitignore or other conventional ignore files?