post events: show post-related mod actions on post event page.

Show the following actions on the post events page:

* Post bans and unbans
* Post deletions and undeletions
* Thumbnail regenerations and IQDB regenerations
* Favorites moves
* Rating locks and unlocks
* Note locks and unlocks

Fixes #3825: Events/Moderation page for each post should show eventual ban actions

db/migrate/20220926050108_update_post_events_to_version_2.rb

@@ -0,0 +1,5 @@
+class UpdatePostEventsToVersion2 < ActiveRecord::Migration[7.0]
+  def change
+    replace_view :post_events, version: 2, revert_to_version: 1
+  end
+end