refactor: Rename all remaining conduwuit references to Continuwuity

Also adds an alias for the old binary name to the dockerfile

Supersedes !1485
Closes #1536
Closes #2277

src/admin/token/mod.rs

@@ -1,7 +1,7 @@
 mod commands;
 
 use clap::{Args, Subcommand};
-use conduwuit::Result;
+use continuwuity::Result;
 
 use crate::admin_command_dispatch;