* feature: update STUNs and TURNs in engine
* fix: setup TURN credentials request only when refresh enabled
* feature: update TURNs and STUNs in teh client app on Management update
* chore: disable peer reflexive candidates in ICE
* chore: relocate management.json
* chore: make TURN secret and pwd plain text in config
* 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>