Add initial issue template

Author: nojaf

.github/ISSUE_TEMPLATE/webapi_request.md

@@ -0,0 +1,20 @@
+---
+name: WebAPI Request
+about: Request support for a specific WebAPI feature or function
+title: "[WebAPI Request] "
+labels: webapi, enhancement
+assignees: ''
+---
+
+### JavaScript Sample of WebAPI You Wish to Use
+
+<!-- Please provide a sample code snippet of the WebAPI function or interface you wish to use. -->
+
+```javascript
+// Sample code goes here
+```
+
+### MDN Link to the Involved Function or Interfaces
+
+<!-- Please provide the MDN link to the function or interface documentation. -->
+[MDN Documentation](https://developer.mozilla.org/en-US/docs/Web/API) Link: <url here>