Add scip/codemarkup language support for Python and C#

[donsbot]

We have indexers for Python and C# now via scip. To make their data more accessible, they should be exported to the codemarkup.angle layer of Glean schemas.

• update the scip entity type https://github.com/facebookincubator/Glean/blob/main/glean/schema/source/code.scip.angle
• extend the tag in the type Entity, in scip.angle https://github.com/facebookincubator/Glean/blob/main/glean/schema/source/scip.angle#L144
• add a case to the untagger https://github.com/facebookincubator/Glean/blob/main/glean/schema/source/scip.angle#L167

Regenerate the schema with make, confirm that it works by writing regression tests for codemarkup.* queries.

Check and confirm glass builds. cabal build glass. Add any missing cases until it compiles.