Connection resilience and Encoding Scheme changes

• reduced MTU from 256 to 150
• connection consolidated logic for client, server, and forwarder

Updated Core BLE Lib

• moved from currantlabs/ble to go-ble/ble

Encoding Changes

• move from gob encoding to json + gzip

Fixes for forwarder and client state updates

• Provide human readable name for devices
• Let forwarder write client state updates if connected to server
• Add listener to clients instead of passing onConnect and onDisconnected functions
• Add OnTimeSync listener to provide codepath for ensured time syncronization
• Test code cleanup

Forwarder Improvements

• forwarder connection graph and rssi map updates
• forwarder run loop fixes

Optimization and Fixes

• Handle nil cases for reads and writes
• Time synchronization fixes
• Optimize BLE reads/writes/connections (try-catch/timeouts)
• Cleanup forwarder unit tests
• Concurrency safe map operations
• Fix packet length (set to MTU)