Migrate to Rais 8.0

- Remove all Rodauth stuff and implement simple custom auth
- Migrate from sprockets to propshaft, hack some bootstrap stuff

test/controller_test.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class ControllerTest < ActionDispatch::IntegrationTest
+  def login(email, password)
+    post "/session", params: { email_address: email, password: password }
+    assert_redirected_to "/"
+  end
+
+  def logout
+    delete "/session"
+    assert_redirected_to "/session/new"
+  end
+end