Add support for Teams Adaptive cards in QnA Dialog

[anishprasad01]

Fixes Internal IcM Issue #373550043
Port of changes from microsoft/botbuilder-js#4467
Fixes #6630

Description

This PR allows for choosing Adaptive Cards formatted for use in Microsoft Teams instead of the default Hero Cards. This is done to support markdown formatting in QnA and CQA responses since Teams only supports markdown in Adaptive Cards. Changes are made in QnACardBuilder.cs and QnAMakerDialog.cs.

Using the new cards simple requires adding code in the bot to take in a new environment variable: UseTeamsAdaptiveCard = "true" and pass it to the QnA dialog constructor. If no changes are made, the bot will default to a Hero card.

Specific Changes

• Create new methods to generate adaptive and hero cards
• Modify the card builder class to take in a new bool field to allow for choosing whether or not to use an adaptive card
• Modify the dialog class to accept the aforementioned bool field and pass it to the card builder.

Testing

Tests tun successfully.

[coveralls]

Pull Request Test Coverage Report for Build 351732

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 188 unchanged lines in 11 files lost coverage.
• Overall coverage decreased (-0.1%) to 78.983%

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Files with Coverage Reduction	New Missed Lines	%
/libraries/integration/Microsoft.Bot.Builder.Integration.AspNet.Core/ServiceCollectionExtensions.cs	1	93.55%
/libraries/Microsoft.Bot.Streaming/Transport/WebSocket/WebSocketClient.cs	2	78.87%
/libraries/Microsoft.Bot.Builder.AI.QnA/Utils/LanguageServiceUtils.cs	3	83.12%
/libraries/Microsoft.Bot.Connector/Authentication/AppCredentials.cs	3	38.46%
/libraries/Microsoft.Bot.Connector/Authentication/ManagedIdentityAppCredentials.cs	4	63.64%
/libraries/Microsoft.Bot.Connector/Authentication/ManagedIdentityAuthenticator.cs	5	88.1%
/libraries/Microsoft.Bot.Connector/Authentication/MicrosoftAppCredentials.cs	23	40.91%
/libraries/Microsoft.Bot.Connector/Authentication/MsalAppCredentials.cs	25	0%
/libraries/Microsoft.Bot.Builder.AI.QnA/Utils/QnACardBuilder.cs	29	72.73%
/libraries/Microsoft.Bot.Builder.AI.QnA/Dialogs/QnAMakerDialog.cs	45	70.31%

Totals
Change from base Build 349053:	-0.1%
Covered Lines:	25885
Relevant Lines:	32773

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💛 - Coveralls

[ceciliaavila]

Just some small details. Also, we could add unit tests to cover the new methods.

[anishprasad01]

@ceciliaavila,

Could you please provide feedback on the new tests?

[BruceHaley]

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.QnA.dll