* Add SNMP type to transport profiles
* Update reference config for transport profiles
* Initial implementation to retrieve a value using SNMP GET message
* Fix license header
* Move config files
* Use async handler for SNMP response
* Send SNMP agent response to attributes and telemetry
* UI: add SNMP option for device profile
* UI: use JSON field to set SNMP profile configuration
* Handle device profile update event
* Use concurrent hash map for SNMP device sessions
* UI: Add device transport configuration control
* Cancel async request to avoid memory leak and timeout handling
* Start SNMP pooling after application started
* Move OID per profile mapping to SNMP transport context
* Fix build after merge with 3.2.1-SNAPSHOT
* Init device sessions on TB start
* Fix build error, refactoring
* Update session context on device update
* Set device info on session context creating
* Refresh pooling params on device or profile update
* Update license header
* Process device and profile transport config update
* Process SNMP response asynchronously
* Change polling implementation
