Sign updates
This is a re submission of the PR with the recommended changes
Changed sign related tags now have an optional argument to specify front or back (defaults to front)
added new mechs to take in map input for dealing with either front, back, or both at the same time (these are of the name sign_sides_mechname )
added 2 new mechs for the player for editing front and back sign
changed the sign command: -added argument of whether the text is going to the front or back -added hanging signs to the sign command (type:hanging_sign) -material should recognize all signs now (added mangroves for 1.19 and cherry/bamboo for 1.20)
There's also the PlayerChangesSignScriptEvent and ItemTag sign-related mechanisms which need to be updated for this, if you want to include that