fix(meetings): fix types

[Shreyas281299]

COMPLETES #https://jira-eng-gpk2.cisco.com/jira/browse/SPARK-502998

This pull request addresses

Export important classes, objects, and constants in plugin-meetings. This will make sure we dont have to import them from from '/dist' folder in WWC.

In internal-plugin-voicea, we were not creating declaration files.

by making the following changes

• Exporting all required objects in plugin-meetings.
• Changed commands in plugin-voicea, and added tsconfig to create proper declaration files.

Change Type

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Documentation update
• [x] Tooling change
• [x] Internal code refactor

I certified that

• [x] I have read and followed contributing guidelines

• [x] I discussed changes with code owners prior to submitting this pull request

• [x] I have not skipped any automated checks

• [x] All existing and new tests passed

• [x] I have updated the documentation accordingly

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Make sure to have followed the contributing guidelines before submitting.

[Shreyas281299]

Code refactor of util.ts and utilv2.ts was required because with the existing code we were getting an empty declaration files.

[sreenara]

Code refactor of util.ts and utilv2.ts was required because with the existing code we were getting an empty declaration files.

Please mark this comment next to the place where the refactor was done