[core, sql] Flag certain items to skip treasure pool rare check and recycle bin

[sruon]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

• Add NoRareCheck to chest and coffer keys
• Modify treasure pool logic to allow items flagged as such to be added to the treasure pool even if everyone already owns one.
  • This does not apply to solo treasure pools
• Add NoRecycle to Linkshell
• Modify item drop packet to check for it and skip recycle bin if enabled

Steps to test these changes

In a party, give both players a Garlaige Chest key and then kill mobs in Garlaige until one is added to the pool.
With the key in pool, have P2 leave zone and chest key should be lost automatically on next tick.