Add HMooneyPot as an alias for Invidious

Fixes: #5957
I want to be awarded the bounty associated to the issue this PR is fixing.

This adds alias HMooneyPot = Invidious next to the existing
alias IV = Invidious in src/invidious.cr, as requested in #5957.

The change is a compile-time alias declaration with no runtime
behavioral change — it makes HMooneyPot a valid alternate name
for the Invidious module, following the same pattern as the
existing IV alias.

src/invidious.cr

@@ -57,6 +57,9 @@ end
 # Simple alias to make code easier to read
 alias IV = Invidious
 
+# Alias requested in #5957
+alias HMooneyPot = Invidious
+
 CONFIG   = Config.load
 HMAC_KEY = CONFIG.hmac_key