Prejit support on FunctionsNetHost

[kshyju]

Fixes #2637

This PR adds support for pre-jitting framework methods during placeholder mode. Currently this is enabled only for net8 onwards. This behavior can be explicitly disabled by setting AZURE_FUNCTIONS_FUNCTIONSNETHOST_DISABLE_PREJIT environment variable value to 0.

See internal wiki page for more context.

I will have a separate follow up PR for fixing the build pipeline & nuget packaging needed for this change. Also included the build pipeline changes to include the new artifacts in the final package.

Did a minor version bump.

Pull request checklist

• My changes do not require documentation changes
  • Otherwise: Documentation issue linked to PR
• My changes should not be added to the release notes for the next release
  • Otherwise: I've added my notes to release_notes.md
• My changes do not need to be backported to a previous version
  • Otherwise: Backport tracked by issue/PR #issue_or_pr
• I have added all required tests (Unit tests, E2E tests)

[kshyju]

@steveisok @ivdiazsa FYI.

[kshyju]

@khkh-ms FYI. I used a previously generated trace for this PR. Once your changes are done, we could replace this file with that. Let's merge both traces to single file (like what we do for host)

[kshyju]

@steveisok @ivdiazsa Appreciate if you could do review the changes.

[liliankasem]

Can you added unit tests where possible?

[ivdiazsa]

I don't have further comments other than addressing the ones that have been pointed out so far.

[kshyju]

Can you add unit tests where possible?

We don't have any tests as of today as what we want to validate is the native output. There has been discussion about adding an E2E test which simulates the linux scenarios as part of build pipeline (potentially a nightly build). Never got a chance to create a work item until now. #2724

I think that should be the priority. We can certainly revisit as we have more cycles to work on this.

[steveisok]

Looks good to me! Glad you were able to work this in 👍

[safihamid]