Redo "invalid extruder" to save 304 bytes

- Use `setTargetedHotend` in `M200`, as with other commands that use
`T` for the extruder
- Synthesize the "invalid extruder" message, obviating several long
strings

Ignore unknown commands if they start with G, M, or T

Print active extruder with M105 for MAX6675

Separate the maximum integral power for the bed from PID_INTEGRAL_DRI…

Initialize the display earlier

Replace MSG_F? with MSG_N?

Update M33 for new gcode parser

To avoid double definitions.
I prefer to read N for Number not for Nozzle.

Was omitted when T0 is a MAX6675.

My PID_INTEGRAL_DRIVE_MAX was at 96, which was insufficient for my bed
to reach its intended temperature. The head requires a low maximum power since
I run on 24 volts and it has a somewhat low thermal mass.

Fix DEGREES macro

to have it ready to display errors during (temperature)-setup.

M110 is a known command

- The command parser now displays “unknown command” in more cases.
Known commands must be added to the `switch` inside `process_commands`
to suppress the error.

Activate BED_MINTEMP error

Call kill() only once when triggered by a temperature error

REVERT THIS CHANGE

In proper use, we want to force the vendor to update this file to reflect distribution parameters

However, until most users have converted to automatic versioning,
we “grant them a pass”

And call _temp_error() directly for ERR_MAXTEMP_BED to avoid the only one time use of bed_max_temp_error().

Includes #2156.

to avoid stack overflow when called from interrupt.

Some clean up for calls of disable_all_heaters().
'disable_all_heaters()' is called in kill() and again when 'killed' is already set inside _temp_error().

Reduce code size with out_of_range_error function

- Affects code size when automatic bed leveling is enabled

!(~(ab)&0x3) and ab == 0x3 are equal

Indentation in process_commands

Cleanup pins in RAMPS_13_EFB boards

No need for +1 on initial seen_pointer

Set seen_pointer before calling code_value

Introduction of Bulgarian - language_bg.h

Kossel Pro

Witbox and Hephestos are RAMPS EFB

Shift call of start_watching_heater() into setTargetHotend()