v6.5 PIN Lock / BMS Release

Includes full PIN Lock support - see https://pev.dev/t/815 for full details.
Includes support for BMS Tmin/Tmax from v6.06 to allow for the latest Refloat to be used with it

###PIN Lock is now also supported in VESC tool via 2 terminal commands:

1. Set/Clear a pin:
   pin_set [oldPIN] [newPIN]

a PIN must be a number between 1 and 9999
a 0 as PIN disables PIN lock entirely

Example: use "pin 0 1111" to set 1111 as your PIN

2. Temporarily unlock / re-lock:
   pin [PIN]