Fixed multi threading and ring of forging charge counting

What has been done in this MR?

• Moved thread and ring-of-forging charge counts to a global player attribute
  • Source for thread: not necessary, the previous approach of attempting to store the charges in the charge slot could never possibly have worked correctly for stackable items. Fixes #1020 and #1052 (closed)
  • Source for ring of forging: in principle we could have fixed the current charge-slot-based system, but I found https://runescape.wiki/w/Ring_of_forging?oldid=2016274 which explicitly states that it's a player attribute and not an item charge so I went with that approach. Fixes #1977
• Ffs, gitlab, closes #1020 closes #1977 is that the magic spell that makes you "close" rather than "mention" now?

What should testers check?

• Thread correctly disappears every 5 items you craft with it, and the mentioned bugs can no longer be reproduced
• Ring of forging correctly disappears every 140 iron ores you smelt wearing it, and also continues to work correctly otherwise
• Once a previous ring of forging has been used up, the next one once again has 140 charges before crumbling

Useful item IDs:

• Forging ring: 2568
  • Needle: 1733
  • Thread: 1734
  • Black d-leather, the one thing I used for testing: 2509 (2510 if noted)
• I have tested these changes thoroughly.
• I used the relevant Zaros tool for any JSON edits where possible, and have attached screenshots of any changes.