.ttslua not detected as Lua

[DavidSalsburg]

Describe the bug

Tabletop Simulator scripting uses .ttslua as its file extension. This, despite being regular Lua, is not recognized due to the alternate extension.

Expected behaviour

This repo, for example, should display the language as Lua, but is currently unclassified.

[lildude]

This appears to be a request to add support for the extension and not a bug as Linguist doesn't currently associate .ttslua with any languages.

A quick search on GitHub.com shows there are only 2990 files so it's not likely to be popular enough for inclusion yet. As such, I'm reclassifying this issue as an enhancement request.

If and when usage meets our 200 unique user/repo combination requirements, please feel free to open a PR adding support. Until then, you'll need to use an override to force the language selection.

[Nixinova]

I used Harvester and out of 2700 files (there are 3K total) I found only 97 unique repos.