Suggestions for claim.py

[CoalByte]

Here's some of the suggestions I have for the plugin at a first glance (mostly comments on the code itself, some on the commands and user experience):

• Formatting should conform to black as It's the formatting of choice for modmail (You could also use PEP 8: 3501/ E252 / E402).
• Add proper embeds instead of individual hardcoded text responses.
• Add settings for which commands to apply the checks to instead of hardcoding each one at the class constructor (iterating through them and applying the check progressively is an option).
• Modify check_reply to simplify mod replies since overridereply is redundant.
• Error handling for unknown threads using embeds or other logging.
• Simplify code (i.e return at send function)
• External / internal settings for the plugin would be appreciated (responses, commands, etc).
• (?) Functions can be made static / minor redundancies should be removed.

Small suggestions:

• Rename claimers -> owners (thread owner) since "claimers" sounds a bit weird.

Btw good job on the overall plugin (good use of the internal databasing).