Add milliseconds to Message Decoder Output

Messages arrive very very fast.  Adding milliseconds to the print log helps debug what is going on.
Fix decimal places in milliseconds

Trailing zeros were previously omitted.

Printing the milliseconds helps a lot in debugging corrupt messages
Merge branch 'insteon_debugger' into insteon_thermo_i2
Insteon::Thermo_i2 Change to sync_time flag and convert time to hex

Set_time is a flay already used in MH, likely for idle time.  Changed flag to sync_time instead.

Also time values needed to be hex encoded.