applicationinsights-clickanalytics-js extension should allow defining which element types clicks are tracked on

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**Is your feature request related to a problem? Please describe.**
In many frameworks (Under ReactJS/Angular/Vue), components are made out of elements that are not traditionally clickable. Example: Combo boxes that are defined in their popup with LI(List). We want to be able to track such clicked elements as well as the out of the box ones. See here:
https://github.com/microsoft/ApplicationInsights-JS/blob/master/extensions/applicationinsights-clickanalytics-js/src/handlers/AutoCaptureHandler.ts#L58
Example of such popular framework is React's Material UI: https://v4.mui.com/

**Describe the solution you'd like**
There should be a way to define in the configuration of this extension which additional elements types can be tracked.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
We had to add explicit event handlers to all these components to fire AI custom events. That creates a pretty big pollution to our code.

Start in extensions/applicationinsights-clickanalytics-js/src/handlers/AutoCaptureHandler.ts around line 58 to understand which element types are currently tracked. Add a configuration path for additional element types and verify that clicks on elements such as list items are captured without requiring explicit event handlers.

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