Distribution packaging continued

[Mpdreamz]

Continues #133

This now puts all required distributions under .artifacts/elastic-distribution.

This includes elastic-*.zip versions of the auto instrumentation zips.
These zips include
* our plugin dll (twice for -windows.zip).
* _instrument.sh a copy of the original instrument.sh
* instrument.sh which sets our plugin var and calls _instrument.sh

This also includes elastic versions of the installation bash script and the powershell module to instrument and install/update on windows.

These files should now upload as part of our release and uploaded as artifacts on each commit in main.

Locally to build the distributables call:

./build.sh redistribute

To validate the distribution there is now a new dockerfile that validates our install and instrumentation scripts:

docker build -t distribution.autoinstrumentation:latest -f examples/Example.AutoInstrumentation/distribution.Dockerfile  . && \
         docker run -it --rm -p 5000:8080 --name distri --platform linux/arm64 distribution.autoinstrumentation:latest

The latter will also form the basis for more integration tests which i'll follow up with