[Feature Request] Adding tables to modify Characters database

Greetings,

Would it be possible to add a module within Keira to modify the characters database? Character_achievement, guild, instance, mail, etc - including automatically converting a specific date to unix time to represent a date in-game.

This would allow someone to add, remove, modify the dates of achievements and achievement progress, modify guilds, instance IDs, bans and more from the editor which will save a lot of time.

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No files, tests, or entry points are named. Start by surveying Keira's existing database-editor modules and the character-related tables listed in the issue, including Character_achievement, guild, instance, and mail. Done would mean a defined module can add, remove, and modify the requested records, including converting specific dates to in-game Unix time.

Written by the indexing model from the issue text.