* abstract peer channel
* remove wip code
* refactor NewServer with Peer updates channel
* feature: add TURN credentials manager
* hmac logic
* example test function
* test: add TimeBasedAuthSecretsManager_GenerateCredentials test
* test: make tests for now with hardcoded secret
* test: add TimeBasedAuthSecretsManager_SetupRefresh test
* test: add TimeBasedAuthSecretsManager_SetupRefresh test
* test: add TimeBasedAuthSecretsManager_CancelRefresh test
* feature: extract TURNConfig to the management config
* feature: return hash based TURN credentials only on initial sync
* feature: make TURN time based secret credentials optional
Co-authored-by: mlsmaycon <mlsmaycon@gmail.com>
