add provisioning shell scripts from Patchdemo
Adapted provisioning scripts from https://gitlab.wikimedia.org/repos/ci-tools/patchdemo/-/tree/master/new and started using them when creating a new Mediawiki instance. This also included adding all the resource files required by the scripts.
Several of the options supported by Patchdemo are not supported by
the chart yet and they have been marked with TODO
s throughout
the code
Bug: T369393