hmtl_handle_msg() can now set pixel objects

- hmtl_setup() also configures an outputs array
Added CubeConfig for Board v2
Separated HMTL Client and Server
Added client commands for sending value and RGB messages
Added RGB handling for value message
Added initial (new) HMTL_Module generic code
Restructure and completed program code in HMTL_Module
Got blink program and python code working
Added option to HMTLClient to kill the server process when done
Added proper draining of serial as well as program clearing