Add options support for discord.js adapter methods

[domin-mnd]

This pull request should resolve #36 & #38 by implementing options argument for adapter methods and removing edit/delete validation.

Although PR is backwards compatible, there's a single somewhat breaking change & some codebase questions.

A breaking change would be channel renderer alternatively requiring Message event for reply to work

private createChannelRenderer(
  event: string | Discord.Message,
  opts?: SendOptions,
) {
  // ...

I'm not sure if I need to make changes to ChannelMessageRenderer to add reply method. At the moment, validation executes inside send method.

[domin-mnd]

I did not deprecate abstract ephemeralReply in Reacord class as I don't know if I should

[itsMapleLeaf]

Thanks for this! I'll take a proper look later

[domin-mnd]

Feel free to request or make changes 👍

[itsMapleLeaf]

This has made me think a lot about how to improve the public interface, and I might make my own tweaks later, but these changes are definitely good enough for now!