pool dir command line fixes
remove old fem supervisor

This simple supervisor is replaced by a two level supervision tree with
a simple_one_for_one supervisor with a FSM pid cache.
Spawn as many pool servers as pool files to manage

Logic to span a dynamic number of workers upon the number of pools we
have to manage and serve
Reduce noise at init stage

Just show how many children to start and not the whole Opts record.
Reduce startup noise
Reduce startup noise
Reduce startup noise, change command-line modifier
Reduce startup noise
Reduce startup noise
Reduce startup noise
New server to cache {HW_address, FSM_Pid} entries

this server allows middlemen to resolve the pid of the DORA machine
serving a client, and spawns new ones as needed.
Reduce startup noise
Initial pool server logic