Add LLM functionality using auto-model V2

[koesie10]

This updates the LLM functionality to use the new request/response format and the query included in codeql when the codeQL.dataExtensions.llmGenerationV2 config setting is enabled.

The first two commits clean up the query resolver for contextual queries so that it's easier to re-use that functionality for resolving non-contextual queries. The last commit uses this to do the following:

• Resolve the query with tags automodel <application-mode/framework-mode> candidates from the CodeQL libraries (either submodule or query pack)
• Run the query
• Convert the results to SARIF
• Encode the SARIF as JSON
• GZIP compress the JSON string
• Base64-encode the GZIPed JSON
• Send the request
• Parse the YAML returned from the API
• Send the modeled methods to the view

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[charisk]

Any chance you could have a separate PR for the refactoring (first two commits)? It'd be easier for me personally but it would also probably bring feedback from others too since the query resolver/contextual queries isn't really an area we own/touched on a lot as a team.

[charisk]

Thanks for getting this working and for writing a few tests too!

[charisk]

I don't quite get why we're calling things "Options" - to me they look like normal method inputs. Also it's hard to know the difference between Options and AutoModelQueryOptions

[koesie10]

These are regular method inputs, but with this many inputs it becomes somewhat harder to reason about the order of the arguments. By using an object, they are at least all named so it becomes easier to reason about them.

I've renamed it to AutoModelQueriesOptions and moved mode into it. I've also moved it closer to the actual function definition so it's easier to distinguish between the two options types.

[charisk]

Thanks for the changes! The term "options" still seems a bit off to me because it makes me think of optional or variadic arguments, but I don't have a good suggestions atm (only "inputs" comes to mind).

[charisk]

Thanks!