Add support for surrounding text with backticks in .bs files

[cewert]

I started using template literals recently and when you highlight text in a .bs file and then hit the backtick button, the text is erased and replaced with a backtick instead of being surrounded with backticks like when working with a javascript file in vscode. I would like to add this functionality to .bs files.

[TwitchBronBron]

I think they just need to be added to these:

https://github.com/rokucommunity/vscode-brightscript-language/blob/c7d9f7b056df25d7f68b16b817a130cd756e906d/language-configuration.json#L19