Add minimum support for static credential stores to admin UI (#1145)

* cred store read ability

* filter out static cred stores and credentials from credential libraries

* chore: 🤖 finish up minimum static cred store support

Co-authored-by: dharini <dharini@hashicorp.com>

addons/api/addon/abilities/credential-store.js

@@ -0,0 +1,16 @@
+import ModelAbility from './model';
+
+/**
+ * Provides abilities for credential store.
+ */
+export default class CredentialStoreAbility extends ModelAbility {
+  // =permissions
+
+  /**
+   * Only "known" credential store types may be read.
+   * @type {boolean}
+   */
+  get canRead() {
+    return !this.model.isStatic && this.hasAuthorizedAction('read');
+  }
+}

addons/api/addon/models/credential-store.js

@@ -31,4 +31,9 @@ export default class CredentialStoreModel extends GeneratedCredentialStoreModel
    * @type {boolean}
    */
   @equal('type', 'vault') isVault;
+
+  /**
+   * @type {boolean}
+   */
+  @equal('type', 'static') isStatic;
 }

addons/api/app/abilities/credential-store.js

@@ -0,0 +1 @@
+export { default } from 'api/abilities/credential-store';

addons/api/mirage/factories/credential-store.js

@@ -4,7 +4,7 @@ import { trait } from 'ember-cli-mirage';
 import permissions from '../helpers/permissions';
 import generateId from '../helpers/id';
 
-const types = ['vault'];
+const types = ['vault', 'static'];
 
 export default factory.extend({
   authorized_actions: () =>