misc: Adjust compiler tests and CI tests

This adds a job level timeout for the compiler tests, allows
them to run weekly instead of daily,  adds a workflow
dispatch option, and changes the
'latests-compilers-all-gem5-builds' jobs to run only the .opt
variant. It also adds a ready for review option
to the CI tests to run when someone converts a draft
pull request.

Change-Id: Id32b5f7da90745d18de2e550bd48d32ba45fb4d9
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/71725
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed