Add dummy app, rspec helper files, and routing tests

spec/dummy/config/secrets.yml

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+# Be sure to restart your server when you modify this file.
+
+# Your secret key is used for verifying the integrity of signed cookies.
+# If you change this key, all old signed cookies will become invalid!
+
+# Make sure the secret is at least 30 characters and all random,
+# no regular words or you'll be exposed to dictionary attacks.
+# You can use `rails secret` to generate a secure secret key.
+
+# Make sure the secrets in this file are kept private
+# if you're sharing your code publicly.
+
+# Shared secrets are available across all environments.
+
+# shared:
+#   api_key: a1B2c3D4e5F6
+
+# Environmental secrets are only available for that specific environment.
+
+development:
+  secret_key_base: fe8b1115c3f6118db2e9f7bbd4a0f93930122d1bdef9ada02ae55980d6a14fbf919b02af010408dc6e7456ceb28faafb9f34ecbce28230dafadb0177541ba94f
+
+test:
+  secret_key_base: 276136c8ffad50817d3e1dcc7a84dd129105108f1c8e920f46b9b98b74943298637e5261fa66868baa50c1a170fcfb99dfb56f5bd33ec1b4bfd8eb34edcedb16
+
+# Do not keep production secrets in the unencrypted secrets file.
+# Instead, either read values from the environment.
+# Or, use `bin/rails secrets:setup` to configure encrypted secrets
+# and move the `production:` environment over there.
+
+production:
+  secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>