Add migration for the disallow-thunderbird-and-seamonkey waffle switch

src/olympia/migrations/1019-disallow-thunderbird-seamonkey-waffle.sql

@@ -0,0 +1,2 @@
+INSERT INTO waffle_switch (name, active, note, created, modified)
+VALUES ('disallow-thunderbird-and-seamonkey', 0, 'Reject submissions for add-ons that are not compatible with Firefox.', NOW(), NOW());