DEV: Move select kit to an addon (#9797)

app/assets/javascripts/select-kit/config/ember-try.js

@@ -0,0 +1,89 @@
+"use strict";
+
+const getChannelURL = require("ember-source-channel-url");
+
+module.exports = async function() {
+  return {
+    useYarn: true,
+    scenarios: [
+      {
+        name: "ember-lts-3.8",
+        npm: {
+          devDependencies: {
+            "ember-source": "~3.8.0"
+          }
+        }
+      },
+      {
+        name: "ember-lts-3.12",
+        npm: {
+          devDependencies: {
+            "ember-source": "~3.12.0"
+          }
+        }
+      },
+      {
+        name: "ember-release",
+        npm: {
+          devDependencies: {
+            "ember-source": await getChannelURL("release")
+          }
+        }
+      },
+      {
+        name: "ember-beta",
+        npm: {
+          devDependencies: {
+            "ember-source": await getChannelURL("beta")
+          }
+        }
+      },
+      {
+        name: "ember-canary",
+        npm: {
+          devDependencies: {
+            "ember-source": await getChannelURL("canary")
+          }
+        }
+      },
+      // The default `.travis.yml` runs this scenario via `yarn test`,
+      // not via `ember try`. It's still included here so that running
+      // `ember try:each` manually or from a customized CI config will run it
+      // along with all the other scenarios.
+      {
+        name: "ember-default",
+        npm: {
+          devDependencies: {}
+        }
+      },
+      {
+        name: "ember-default-with-jquery",
+        env: {
+          EMBER_OPTIONAL_FEATURES: JSON.stringify({
+            "jquery-integration": true
+          })
+        },
+        npm: {
+          devDependencies: {
+            "@ember/jquery": "^0.5.1"
+          }
+        }
+      },
+      {
+        name: "ember-classic",
+        env: {
+          EMBER_OPTIONAL_FEATURES: JSON.stringify({
+            "application-template-wrapper": true,
+            "default-async-observers": false,
+            "template-only-glimmer-components": false
+          })
+        },
+        npm: {
+          ember: {
+            edition: "classic"
+          }
+        }
+      }
+    ]
+  };
+};

app/assets/javascripts/select-kit/config/environment.js

@@ -0,0 +1,5 @@
+"use strict";
+
+module.exports = function(/* environment, appConfig */) {
+  return {};
+};