Set revision when building jar with gradle (#17)

[Github Bot]

Set revision when building jar with gradle (#17)

* Add revision to jar manifest and load in code

* Override revision in tests

* Remove RELEASED

* Enable releases

* move to StaticEntity, add build info

* Fix tests for revision numbers

* Change product name to CONSTANT_CASE

* Capitalize getBuildInfo properly

* We only have one MANIFEST file

* Use r0 instead of rUnknown, make r0 pass all `since` checks

* Remove another manifest loop

* Change Modified classifier back to M

* Use system-agnostic File constructor on gradle

* Added shadow plugin

* Fix version numbers - we have to use shadowJar

* Final tidy-up

* Do not run the PR tests twice

Co-authored-by: Rinn <Kirchoff.Joseph.P@gmail.com>
Co-authored-by: BadHorseMonkey <58645293+BadHorseMonkey@users.noreply.github.com>

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