Global XP

• Added configuration option "retrieve_xp_orbs" for making extracted XP spawn as an XP orb, making the block work with the Mending enchantment

• Added configuration option "retrieval_amount" to control how much XP points are retrieved per interaction. See config file for details.
• Added configuration option "storing_amount" to control how much XP points are stored per interaction. See config file for details.

• Added Polish translation (Thanks kacpergibas438!)

• Fix empty XP Block not dropping in survival mode

• Added Polish translation (Thanks kacpergibas438!)
• Fixed French translation

• Added TheOneProbe integration (Thanks Konlii!)
• The XP Block now stores XP instead of individual levels (Thanks CplPibald and Konlii!)
• The XP Block now retains its contents when broken

All already existing blocks will lose their storage!