add thanks command, update env, msg package and readme

[devldm]

📝 Description

Adding a ThankCommand and a thanks channel. This is in the hopes of making it easier to acknowledge people that have helped you as well as providing a place for "appreciation messages" to live within the server.

This should both help users see who is helping others whilst also promoting helping others as its now more visibly rewarded / celebrated.

✔️ PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Chore (non-breaking change which does not affect codebase; Build related changes, version modification, etc.)

🎯 Current behaviour

Currently there is no way to explicitly thank another user outside of leaving a thanks message or emoji.

🚀 New behaviour

1. Use the /thanks command as shown below

2. Upon sending the bot responds with

3. The bot then sends a message to a newly created thanks channel as below

Things to consider

• This implementation would require a new channel or re-purposing of an existing channel as a place to send these messages to.
• A THANKS_CHANNEL id will need to be added to local .envs in order to test and push out this feature as reflected in the updated readme.md
• While in these changes LogThanks has been added, this may be seen to send logs unnecessarily and could be removed without issue
• This command could likely be used in the future to send POST requests to a potential thank-track database as mentioned in the project-showcase channel