no filtering, command pass from SERIAL to TCP, and TCP to SERIAL, but
are also stored to check if there is a [ESPXXX]<param>\n where XXX are
command number and <param> is a sequence of parameters ended by a \n
Modify EEPROM content to reflect the possible settings
Add a buffer format function to query/write EEPROM instead of always
using string function to save space.
Update Reset/Print Configuration with new settings
Code Cleaning
Some settings stay default as no real add value currently to allow to
change them
Basic Setting Function Save/Read from EEPROM
Connection to wifi according settings in EEPROM
Recovery Mode using GPIO2 just after module start to reset settings
