feat: replaced entityRecognizers with externalEntityRecognizer in OrchestratorAdaptiveRecognizer

[chon219]

Fixes #3115

Description

Replaced entityRecognizers with externalEntityRecognizer in OrchestratorAdaptiveRecognizer

Specific Changes

• replaced entityRecognizers with externalEntityRecognizer in OrchestratorAdaptiveRecognizer
• updated OrchestratorRecognizer
• moved createChooseIntentResult to Recognizer
• removed unused dependencies in botbuilder-ai-orchestrator

Testing

Updated test cases for orchestrator

[coveralls]

Pull Request Test Coverage Report for Build 441941263

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 41 unchanged lines in 5 files lost coverage.
• Overall coverage increased (+0.0009%) to 84.295%

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Files with Coverage Reduction	New Missed Lines	%
libraries/adaptive-expressions/src/triggerTrees/trigger.ts	2	61.63%
libraries/botbuilder-dialogs/src/recognizer.ts	3	88.89%
libraries/botbuilder-ai-orchestrator/src/orchestratorRecognizer.ts	4	33.33%
libraries/adaptive-expressions/src/triggerTrees/node.ts	10	90.51%
libraries/botbuilder-ai-orchestrator/src/orchestratorAdaptiveRecognizer.ts	22	61.03%

Totals
Change from base Build 438328356:	0.0009%
Covered Lines:	17628
Relevant Lines:	19979

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💛 - Coveralls

[joshgummersall]

Couple quick comments.