Add support for MiniScript (.ms) source files

[JoeStrout]

I'm the lead dev of MiniScript, a scripting language that's been around since 2017. Our community is small (probably ~5000 members or so) but growing. MiniScript source files are plain text with a .ms extension, but of course Quick Look refuses to preview them.

This app was recommended to me as a possible solution, but it doesn't know what to with them either, because the system has assigned it a dynamic UTI, even though file knows they are plain text.

$ file mainScene.ms
mainScene.ms: ASCII text
$ mdls -name kMDItemContentType -name kMDItemContentTypeTree mainScene.ms
kMDItemContentType     = "dyn.ah62d4rv4ge80462"
kMDItemContentTypeTree = (
    "public.item",
    "dyn.ah62d4rv4ge80462",
    "public.data"
)

A fair number of our community are on Macs, and you would be our hero if you added support for .ms files.

If it would make things go faster for me to submit a PR, I'm happy to do so, if you can just give me a nudge in the right direction.

[sbarex]

Sorry, but MiniScript is not supported by the Highlight render engine.

[JoeStrout]

Yeah but text is (I assume). Can't we just preview it as a text file?