Channel Converters should support channel links

[TrustyJAID]

Summary

Channel Converters should support channel links

What is the feature request for?

discord.ext.commands

The Problem

Discord is now providing channel jump links in the client and even renders them to look like channel mentions. As a result, some users are attempting to use the jump link to the channel instead of traditional mentions or ID's inside commands. This is failing and causing unexpected results in some cases.

The Ideal Solution

Add support in the GuildChannelConverter to parse and find channels based on a provided jump link to the channel.

The Current Solution

The current solution is including a secondary converter alongside a ChannelConverter just to detect jump links and extract channel ID that way.

Additional Context

No response