[text analytics] add bing ID property for LinkedEntity

[iscai-msft]

[maririos]

Blocked until service adds property to swagger

[maririos]

Azure/azure-rest-api-specs#10440.
Why have a separate property and not use LinkedEntity.Id?

[maririos]

BingId is used to find the entity in the Microsoft graph using the Bing Entity Search (BES) API
It is for more advanced usersI

[maririos]

Because of how specific it is, I'm proposing going with BingEntitySearchAPIId instead of BingID to make sure the user knows that this is not for everyone and that it is "complicated" enough that unless they need it, they shouldn't care

[maririos]

There are more Bing APIs https://docs.microsoft.com/en-us/azure/cognitive-services/bing-web-search/bing-api-comparison?toc=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fazure%2Fcognitive-services%2Fbing-autosuggest%2Ftoc.json&bc=https%3A%2F%2Fdocs.microsoft.com%2Fen-us%2Fazure%2Fbread%2Ftoc.json
which makes us more convinced that being specific about the name of the service is the way to go