add explore client tests & rename files

Signed-off-by: Andrew Thauer <athauer@wealthsimple.com>

plugins/explore-common/src/index.ts

@@ -20,5 +20,4 @@
  * @packageDocumentation
  */
 
-export * from './api';
-export * from './types';
+export * from './tools';

plugins/explore-common/src/tools/index.ts

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2022 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Common functionalities for the explore plugin.
+ *
+ * @packageDocumentation
+ */
+
+export * from './api';
+export * from './types';