Refactor edition enablement (#1657)

* refactor: 💡 consolidate ssh features into ssh-target flag

✅ Closes: ICU-8383

* refactor: 💡 factor out base edition

* feat: 🎸 dynamic feature edition enablement and toggling

ui/admin/tests/unit/instance-initializers/feature-edition-test.js

@@ -0,0 +1,39 @@
+import Application from '@ember/application';
+
+import config from 'admin/config/environment';
+import { initialize } from 'admin/instance-initializers/feature-edition';
+import { module, test } from 'qunit';
+import Resolver from 'ember-resolver';
+import { run } from '@ember/runloop';
+
+module('Unit | Instance Initializer | feature-edition', function (hooks) {
+  hooks.beforeEach(function () {
+    this.TestApplication = class TestApplication extends Application {
+      modulePrefix = config.modulePrefix;
+      podModulePrefix = config.podModulePrefix;
+      Resolver = Resolver;
+    };
+
+    this.TestApplication.instanceInitializer({
+      name: 'initializer under test',
+      initialize,
+    });
+
+    this.application = this.TestApplication.create({
+      autoboot: false,
+    });
+
+    this.instance = this.application.buildInstance();
+  });
+  hooks.afterEach(function () {
+    run(this.instance, 'destroy');
+    run(this.application, 'destroy');
+  });
+
+  // TODO: Replace this with your real tests.
+  test('it works', async function (assert) {
+    await this.instance.boot();
+
+    assert.ok(true);
+  });
+});