Entity & EntityTypes to Search Intent

[pyu-cmcsa]

https://ccp.sys.comcast.net/browse/FIRE-305

Be able to pass as part of a search intent, specific entities in addition to the search query itself. Usecase is to allow IUI/EPG to create a row/rail based on the search query but include specific entities.

Add entity and entityTypes to the data portion of the search intent.

[pyu-cmcsa]

https://etwiki.sys.comcast.net/display/GAP/PRD+-+Headline+Entities+in+Firebolt+Search+Intent