Add security-todo and beta-checklists, and some security rake tasks

Gemfile.lock

@@ -116,6 +116,7 @@ GEM
     debug (1.11.0)
       irb (~> 1.10)
       reline (>= 0.3.8)
+    docile (1.4.1)
     dotenv (3.1.8)
     drb (2.2.3)
     ed25519 (1.4.0)
@@ -345,6 +346,12 @@ GEM
     sentry-ruby (6.2.0)
       bigdecimal
       concurrent-ruby (~> 1.0, >= 1.0.2)
+    simplecov (0.22.0)
+      docile (~> 1.1)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-html (0.13.2)
+    simplecov_json_formatter (0.1.4)
     solid_cable (3.0.12)
       actioncable (>= 7.2)
       activejob (>= 7.2)
@@ -464,6 +471,7 @@ DEPENDENCIES
   selenium-webdriver
   sentry-rails (~> 6.2)
   sentry-ruby (~> 6.2)
+  simplecov
   solid_cable
   solid_cache
   solid_queue (~> 1.2)