Simplify CI Testing

[Mpdreamz]

Ensures we can call the test suite grouping we partitioned on CI locally easily as well:

# the default is Unit e.g so the first two are equivalent
./build.sh test 
./build.sh test --test-suite Unit
./build.sh test --test-suite Integrations
./build.sh test --test-suite Profiler
./build.sh test --test-suite Azure
./build.sh test --test-suite IIS
./build.sh test --test-suite StartupHooks

StartupHooks and Profiler will build their dependencies automatically simplifying reproducing these further. You can use --clean false locally to run the tests multiple times without cleaning and rebuilding the artifacts (including profiler and agent zips).

This now also more clearly separates Unit from Integrations. Allowing us to more clearly run faster tests locally during our development loop for quick validations.

Lastly this moves us over to https://github.com/Tyrrrz/GitHubActionsTestLogger for github test reporting. This allows us to move away from stashing xml files and we can thus remove the -reporter.yml workflows.

[v1v]

Minor comments, other than that LGTM

[v1v]

LGTM.

qq: I see the IIS test-suite, but no changes in https://github.com/elastic/apm-agent-dotnet/blob/main/.github/workflows/test-windows-iis.yml , is that expected?

[Mpdreamz]

Good catch! I was planning to follow up this and #2363 merging IIS into test-windows.yml too.

I need to ensure we set some environment variables automatically when calling ./build.bat IIS too in that follow up PR.