Experimental android gradle plugin 9 fork / PR

[mikehardy]

This is no where close to merge and little attention should be paid to it now

However AGP9 will contain lots of changes (including breaking changes to the plugin ecosystem in at least one dep we use - the Triple-T publisher) and I've been mentally collecting workarounds and fixes

This makes that collection of workarounds and fixes a concrete thing vs stuck in my head

There are still at least 4 unresolved problems which you can reproduce by any of:

• uncommenting the two chunks of gradle files I commented
• attempting to git commit without adding --no-verify (the ktlint thing fails)
• turning on fatal warnings again (there is an unresolved java type mismatch in the codebase)