Fixed Bug: Fixed Context Preservation after multiple agent switches

feat: Implement multi-agent voice demo with context preservation

Merge pull request #6 from deepgram-starters/chore/update-tests

checks tests updates readme

Merge pull request #5 from deepgram-starters/feat/agent-v1-update

updates SDK and for greeting fix

fix: settings structure

updates for agent v1

feat:updates for agent v1

Merge pull request #4 from deepgram-starters/fix/add-tests

adds tests

Merge pull request #3 from deepgram-starters/feat/app-build-2

fixes type in sample code

updates readme

fixes mic and playback issues