Add branch specification for run-tests job in release workflow

Rename version.yml to release.yml and fix tests

Add run-tests job to version workflow

Fix NULL_ENT_INDEX not being negative

i swear i must change this shit github tag action

NULL is handled correctly now, also added a test for it

MAKE IT WORK

Some quick cleanup, to make LuaLS shutup a bit

LuaLS formatting

Add encode_to_hex and decode_from_hex functions