Prompty template support

[erandermsft]

Purpose

• Added Prompty templates instead of YAML

Does this introduce a breaking change?

[ ] Yes
[X ] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[X ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

• Test the code

What to Check

Verify that the following are valid

• ...

Other Information

[h2floh]

👋 @erandermsft can you please rebase and/or resubmit the PR? We had to do some changes to be able to continue using Bing Search. Thank you!