Fixes a bug where we were looking for incorrect keys for metrics rules.
Previously, we were using full language names in the keys. Now, we use
the short language names in the metric ids. This is done through a
simplification of the code.

Also, this change does two smaller things:

1. Prints out the baseline count to the logs
2. Adds the `assertNever` function to ensure we never miss a case in
   a switch statement. This function is borrowed from vscode-codeql.

Output environment file for Windows

Fix security vulnerabilities

Fix information about `npm ci`

Co-authored-by: Robert <robertbrignull@github.com>

Make matrix run all cases of the python-deps tests

Ran `npm audit fix`.

Even though this fixes a "high" severity vulnerability, all affected
packages are dev packages only.

Update contributing guide

This adds a section on checking in compiled artifacts.

Add category input

Fix lines of code mapping

We were inadvertently using codeql language ids instead of the action's
language ids. There is now a 3-way mapping between the ids used by
the lines counter library, the action, and codeql.

fix value escaping in codeql-env.sh

Fix typos in logging

Avoid fingerprinting directories

Co-authored-by: Andrew Eisenberg <aeisenberg@github.com>

Clarify the missing baseline lines of code warning message

…terpretation

Log each query as it's interpreted when calling codeql database analyze