[Refactor] Add delay for camera status update

[vhuseinova-msft]

Purpose

• Added delay for camera switching and for turning camera on
• Updated Changelog

Does this introduce a breaking change?

[ ] Yes
[x] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[x] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

What to Check

Verify that the following are valid

• turn on-of camera quickly a couple of times, a local camera video should be shown as expected
• switch between back and front camera quickly a couple of times, a local camera video should be shown as expected