Refactor input, limit deletion to certain prefixes, misc uplifts and fixes

[luispabon]

The action now takes a whole bunch of inputs that it didn't originally, creating unwieldy input management and functions with tons of arguments. This PR refactors input to make it more manageable.

It also brings in the ability to limit deletion to branches with a certain prefix via #21

Changes:

• Refactor input management to populate a self validating object
• Add the option to limit deletion to branches with a certain prefix (Add support for limiting deletion to defined branch prefixes #21)
• Refactor github actions outputs - closes TypeError: expected str, bytes or os.PathLike object, not NoneType #23
• Tweak tests to run directly against the container having the current code
• Pin container usage to v2
• Upgrade to python 3.11
• Update README