fix(plugin-chart-echarts): make to allow the custome of x & y axis title margin i… (#18947)

* fix(chartviz): make to allow the custome of x & y axis title margin in  chart

* fix(chartviz): add eslint radix error in chart.js

* fix(chartviz): change the transformProps in chart plugin & creat helper.

* fix(chartviz): lint fix & chart.js back

* fix(plugin-chart-echarts): make to allow the custom margin of X & y axis in BoxPlot & Mixedtimeseries charts

* fix(plugin-chart-echarts): make to change changeNumber to changeInteger

* fix(plugin-chart-echarts): make to add license & change file name

superset-frontend/plugins/plugin-chart-echarts/src/utils/convertInteger.ts

@@ -0,0 +1,22 @@
+/**
+ * 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.
+ */
+export const convertInteger = (value: string | number) => {
+  if (typeof value !== 'number') return parseInt(value, 10) || 0;
+  return value;
+};