Feat: Edited Message Command Processing

[ultrabear]

Currently sonnet ignores processing a edited message as a command, but this behavior should be changed to allow reprocessing mistaken commands, the rules for parsing edited messages should be stricter than sent messages to not cause confusion:

• only messages sent up to X minutes ago (potentially 5-10)
• only messages originally using the command prefix (?)
• only messages originally a valid command (?) [potentially not, as this excludes the case of a mistyped command name]

[ultrabear]

only commands that error up to 5 mins ago is safer, but it can be confusing esp since not all commands hook into the failure api