[V3] Warning system (#1173)

* [V3 Warning] initial work on a warning system for v3

* [V3 Warning] rename some stuff and add a case type

* [V3 Warnings] rename package from warning

* [V3 Warnings] restructuring commands

* [V3 Warnings] remove expiry stuff + other refactoring

* [V3 Warnings] refactoring action logic

* [V3 Warnings] rewrites to action logic

* [V3 Warnings] add regen_messages.py

redbot/cogs/warnings/locales/regen_messages.py

@@ -0,0 +1,16 @@
+import subprocess
+
+TO_TRANSLATE = [
+    '../warnings.py',
+    '../helpers.py'
+]
+
+
+def regen_messages():
+    subprocess.run(
+        ['pygettext', '-n'] + TO_TRANSLATE
+    )
+
+
+if __name__ == "__main__":
+    regen_messages()