Chore: clean up Reporting Events (#4044)

Tech debt clean up

Fixes #4057

Co-authored-by: Aswin Dev P S <aswin@chatwoot.com>

db/migrate/20210513143021_rename_events_to_report_events.rb

@@ -0,0 +1,5 @@
+class RenameEventsToReportEvents < ActiveRecord::Migration[6.0]
+  def change
+    rename_table :events, :reporting_events
+  end
+end