[Feature Request]: Allow passing custom Bot

[stepro]

Scenario

Please look at this code:

https://github.com/microsoft/teams-ai/blob/main/dotnet/packages/Microsoft.TeamsAI/Microsoft.TeamsAI/Application/TeamsAdapter.cs#L48

It restricts the means for authentication to using the configuration-based approach only in two ways:

a) it doesn't expose an equivalent to the CloudAdapter constructor that accepts a custom BotFrameworkAuthentication instance.
b) it hardcodes usage of ConfigurationServiceClientCredentialFactory.

This makes it impossible to use Teams.AI when the underlying bot framework configuration is using federated credentials, which is currently pending a configuration-based implementation (see microsoft/botbuilder-dotnet#6838).

Solution

One or both of the following:

• The bot framework implements the configuration-based approach for federated credentials (I've suggested an extension of this PR here).
• The Teams.AI library allows passing a custom BotFrameworkAuthentication instance to TeamsAdapter.

Just the first approach will work as an immediate solution and may be the easier of the two, but the second approach seems like it should be supported in general to enable more flexibility around authentication.

Additional Context

Thanks in advance for considering!

[singhk97]

Thanks for the feature request! The second solution seems viable to me, we'll add it to our backlog but don't have a timeline for this.

Would you like to open a PR?

[stepro]

Sure, I'll give it a shot!

[stepro]

Sure, I'll give it a shot!

Like this: #2166