Add the Ability to Insert HTML Offers via the VEC

[#1]

Please add the ability to Insert HTML Offers.  Right now the VEC allows Text, HTML, Experience Fragments and Recommendations to be Inserted, but not HTML Offers from the Adobe Target offer library.  

[#2]

This is a vital improvement to make Adobe Target Offers reusable and avoid mistakes while copy-paste. Adding @MihneaD and @Amelia_Waliany for more visibility 

[#3]

I'm surprised that you can replace HTML with an HTML Offer, but you can't just insert an HTML Offer using the Insert Before/After option in the VEC...