Add the possibility to have multiple icon vocabularies

@ashish-deynap I checked patch here, it is applying successfully on the latest version but after applying patch, I am not getting icon image for selecting taxonomy term.
My testing steps:

1. Created terms on Icons taxonomy terms.
2. Added icons in terms.
3. Created a reference field on article content type and added an entity reference field.
4. This field is a terms reference field.
5. On Manage form display setting set Icon Select widget for this field.
6. On node add/edit form, I am not getting icon image.

I am not getting any functionality-wise change after adding patch. Can you please also provide a proper issue description?

I missed SS. Sorry for noise.