build: add TypeScript to CodeQL

[rtritto]

Description

Add TypeScript language to CodeQL.

Checklist

• I have signed the Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)
• New tests and/or benchmarks are included
• Documentation is changed or added

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[addaleax]

@rtritto If I understand the GH docs for CodeQL correctly, these are just aliases for each other – just want to check, is the intention of this PR to be explicit about the fact that both JS and TS are being analyzed (and, in that case, would we prefer javascript-typescript as a single value to make it more obvious that that's what's happening, and not two separate analyses)? Or did something actually change w.r.t. the meaning of these labels and are the GH docs out of date?

[rtritto]

Currently projects are JS and TS, so we need both in CodeQL.
I think that can be used a single label (javascript-typescript), I done the commit.