update to discord.js v14

[mikejoh12]

What issue is this solving?

Closes #348

Description

Updates the bot to use discord.js v14 which is using the Discord v10 api.

Any helpful knowledge/context for the reviewer?

Some of the changes required included modifying the code for building Embeds, adding GatewayIntentBits.MessageContent permission, modifying hex-colors to use 0x6096ba type format instead of '#6096ba' type format, and some error code/constant imports and naming.

I have tested all commands briefly but we should do some more testing of all commands including filter and deleted-msg-logging to make sure no new bugs are introduced.

• Is a re-seeding of the database necessary? No
• Any new dependencies to install? Yes, run npm install.

Please make sure you've attempted to meet the following coding standards

• Code has been tested and does not produce errors
• Code is readable and formatted
• There isn't any unnecessary commented-out code