[IMPROVEMENT] - Break free from 0BDFDB

[rollingmoai]

Describe the solution you'd like See https://github.com/Saalvage/BetterDiscordAddons/issues/2#issuecomment-1242878709:

Yeah, a rewrite to break free of the 0BDB library is a better way for showhiddenchannel to survive all the discord updates.

Here is a ShowHiddenChannels plugin rewritten from scratch that doesn't require BDFDB: https://github.com/Tharki-God/BetterDiscordPlugins/blob/master/ShowHiddenChannels.plugin.js

It even shows the channel topic:

Describe alternatives you've considered None

Additional context