And reduce the function size to simplify

_123, -123, _-12, __-1  plus  1234, 12.3, -1.2

- This function becomes obsolete if ftostr4sign is re-written.

・Fix memory leak

Includes:
  *firmware version / branch / date.
  *extruder count
  *board information (name, serial details, power supply type)
  *thermistors (names, min/max temperatures)
  *printer statistics (PRINTCOUNTER details)

Thanks to @thinkyhead for contributions.

Following up on #3231

Hopefully this is helpful to organization and future expansion….

Hopefully this is helpful to organization and future expansion….

Hopefully this is helpful to organization and future expansion….