Move convertDateTime, refactor query_utils (opensearch-project#1064)

Signed-off-by: Peter Fitzgibbons <peter.fitzgibbons@gmail.com>

public/components/common/query_utils/__tests__/query_utils.test.tsx

@@ -0,0 +1,46 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import React from 'react';
+import { parsePromQLIntoKeywords } from '../';
+
+describe('Query Utils', () => {
+  describe('parsePromQLIntoKeywords', () => {
+    test('should parse plain catalog.metric into keywords', () => {
+      const query = 'catalog.metric';
+      const keywords = parsePromQLIntoKeywords(query);
+      expect(keywords).toEqual({
+        aggregation: 'avg',
+        attributesGroupBy: '',
+        connection: 'catalog',
+        metric: 'metric',
+      });
+    });
+
+    test('should parse simple ppl query_range into keywords', () => {
+      console.log('should parse simple ppl query_range into keywords');
+      const query = "source = test_catalog.query_range('metric')";
+      const keywords = parsePromQLIntoKeywords(query);
+      expect(keywords).toEqual({
+        aggregation: 'avg',
+        attributesGroupBy: '',
+        connection: 'test_catalog',
+        metric: 'metric',
+      });
+    });
+
+    test('should parse promql into keywords', () => {
+      console.log('should parse promql into keywords');
+      const query = "source = test_catalog.query_range('count by(one,two) (metric)')";
+      const keywords = parsePromQLIntoKeywords(query);
+      expect(keywords).toEqual({
+        aggregation: 'count',
+        attributesGroupBy: 'one,two',
+        connection: 'test_catalog',
+        metric: 'metric',
+      });
+    });
+  });
+});