Feature request: message editing support

[Syriiin]

Request to support sedbot style message edits with regex substitution.

[Syriiin]

Not going to add full regex support like sedbot at the moment since its pretty overkill.
Will probably just add simple replacement with syntax like:

IRC
<Syrin> Testng
<Syrin> *ng/ing
<Bridge> <*Syrin> Testing
<Bridge> <Syrrrrr> Testing from dscrd
<Bridge> <*Syrrrrr> Testing from discord

Discord
<Bridge> <Syrin> Testing (edited)
<Syrrrrr> Testing from discord (edited)

[Syriiin]

Also should probably have a limit on which messages editing should be allowed.
Probably dont want people editing messages from ages ago and polluting the current time irc chat.
Perhaps limits should be:

• must be the latest message from user
• for discord, must be within the last 10 independent messages sent in the channel between irc and discord (not including edits)