port: [#4274] Add settings.selectedChannel to TeamsChannelData and Type to ChannelInfo and TeamDetails (#6360)

[sw-joelmut]

Fixes #4274

Description

This PR adds the ability to gather the selected MS Team's channel id when available in the incoming Activity. (Available in Install and Uninstall the teams' bot events).

Specific Changes

• Added the teamsGetSelectedChannelId helper function.
• Added the TeamsChannelDataSettings interface and all its related properties to be accessible from the Activity.
• Added unit tests around this implementation.
• Updated mappers to include the new added properties.
• Updated compatibility Markdown document.

Testing

The following images show the tests passing successfully and the selected channel id being gathered successfully from a teams' bot.

[coveralls]

Pull Request Test Coverage Report for Build 2739621062

• 4 of 4 (100.0%) changed or added relevant lines in 2 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.003%) to 84.515%

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Files with Coverage Reduction	New Missed Lines	%
libraries/botbuilder-lg/src/templateExtensions.ts	1	84.48%

Totals
Change from base Build 2732579521:	0.003%
Covered Lines:	19942
Relevant Lines:	22350

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💛 - Coveralls