Cogs reference for application commands

[Dorukyum]

Describe the solution you'd like
A guide page made for application command cogs would be nice.

Additional context
There's only a cogs page for ext.commands at the moment (and an example cog in the ext.bridge guide).

[EmreTech]

Technically, there is a section in the slash commands guide about cogs. But that section should be copied over to context menus or moved to a separate guide altogether.

[Dorukyum]

I think it should be moved to a seperate guide to make it consistent with the prefixed commands section and to show that it can be used with all application commands and not only slash commands.

[Dorukyum]

or we could move the current Cogs guide (for ext.commands) to the App Commands directory and add a new guide to ext.commands that references this one.