feat: Adds plugin-chart-handlebars (#17903)

* adds: plugin chart handlebars

* adds: handlebars plugin to main presets

* update: npm install

* chore: lint

* adds: dateFormat handlebars helper

* deletes: unused props

* chore: linting plugin-chart-handlebars

* docs: chart-plugin-handlebars

* adds: moment to peer deps

* update: use error handling

* update: inline config, adds renderTrigger

* update: inline config, adds renderTrigger

* camelCase controls

* (plugins-chart-handlebars) adds: missing props

Adds missing propeties in test formData

* (plugin-chart-handlebars) fixes test

* (plugin-handlebars-chart) use numbers for size

* (feature-handlebars-chart) fix viz_type

* (plugin-handlebars-chart) revert

revert the viz_type change. it was in the wrong place.

* fix test and add license headers

Co-authored-by: Ville Brofeldt <ville.v.brofeldt@gmail.com>

superset-frontend/plugins/plugin-chart-handlebars/src/components/Handlebars/HandlebarsViewer.tsx

@@ -0,0 +1,66 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+import { SafeMarkdown, styled } from '@superset-ui/core';
+import Handlebars from 'handlebars';
+import moment from 'moment';
+import React, { useMemo, useState } from 'react';
+
+export interface HandlebarsViewerProps {
+  templateSource: string;
+  data: any;
+}
+
+export const HandlebarsViewer = ({
+  templateSource,
+  data,
+}: HandlebarsViewerProps) => {
+  const [renderedTemplate, setRenderedTemplate] = useState('');
+  const [error, setError] = useState('');
+
+  useMemo(() => {
+    try {
+      const template = Handlebars.compile(templateSource);
+      const result = template(data);
+      setRenderedTemplate(result);
+      setError('');
+    } catch (error) {
+      setRenderedTemplate('');
+      setError(error.message);
+    }
+  }, [templateSource, data]);
+
+  const Error = styled.pre`
+    white-space: pre-wrap;
+  `;
+
+  if (error) {
+    return <Error>{error}</Error>;
+  }
+
+  if (renderedTemplate) {
+    return <SafeMarkdown source={renderedTemplate} />;
+  }
+  return <p>Loading...</p>;
+};
+
+//  usage: {{dateFormat my_date format="MMMM YYYY"}}
+Handlebars.registerHelper('dateFormat', function (context, block) {
+  const f = block.hash.format || 'YYYY-MM-DD';
+  return moment(context).format(f);
+});