Add other data element types

[cdcharlebois]

https://github.com/cdcharlebois/mx-har-analyzer/blob/ccfa01327c12ff46cae74a8ec0d4c599c44c7557/modelsdk.ts#L23

There must be other data element types for Data Grids, Template Grids, DG2, etc

[Robinfr]

@cdcharlebois There are essentially infinite data element types since anyone can create a pluggable widgets with a datasource. Therefore, if you want to capture all data sources, it's better to look at which things have a data source instead :)