Remove hardcoded line length limit

[abhaybd]

The length of a single print statement seems arbitrarily limited to 119 characters (120 byte buffer). This could create unforeseen issues where long print statements are being truncated unexpectedly, especially since this isn't documented anywhere.

This PR removes the line length restriction, by pre-calculating the required buffer length. Then the buffer is created, preferably using a variable-length array, or heap allocation if VLAs aren't supported.

This change would make the library more intuitive, since print statements aren't being truncated unexpectedly.

[CLAassistant]

All committers have signed the CLA.

[github-actions]

Memory usage change @ 0f3038b

Board	flash	%	RAM for global variables	%
arduino:avr:leonardo	🔺 +80 - +80	+0.28 - +0.28	0 - 0	0.0 - 0.0
arduino:avr:mega	🔺 +80 - +80	+0.03 - +0.03	0 - 0	0.0 - 0.0
arduino:avr:nano	🔺 +80 - +80	+0.26 - +0.26	0 - 0	0.0 - 0.0
arduino:mbed_nano:nano33ble	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed_nano:nanorp2040connect	🔺 +14 - +14	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed_portenta:envie_m4	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:mbed_portenta:envie_m7	0 - 0	0.0 - 0.0	0 - 0	0.0 - 0.0
arduino:megaavr:nona4809	🔺 +62 - +62	+0.13 - +0.13	0 - 0	0.0 - 0.0
arduino:sam:arduino_due_x_dbg	🔺 +16 - +16	0.0 - 0.0	N/A	N/A
arduino:samd:mkrzero	🔺 +8 - +8	0.0 - 0.0	0 - 0	0.0 - 0.0

Click for full report table

Board	examples/Arduino_Debug_Basic flash	%	examples/Arduino_Debug_Basic RAM for global variables	%	examples/Arduino_Debug_Advance flash	%	examples/Arduino_Debug_Advance RAM for global variables	%
arduino:avr:leonardo	80	0.28	0	0.0	80	0.28	0	0.0
arduino:avr:mega	80	0.03	0	0.0	80	0.03	0	0.0
arduino:avr:nano	80	0.26	0	0.0	80	0.26	0	0.0
arduino:mbed_nano:nano33ble	0	0.0	0	0.0
arduino:mbed_nano:nanorp2040connect	14	0.0	0	0.0
arduino:mbed_portenta:envie_m4	0	0.0	0	0.0
arduino:mbed_portenta:envie_m7	0	0.0	0	0.0
arduino:megaavr:nona4809	62	0.13	0	0.0	62	0.13	0	0.0
arduino:sam:arduino_due_x_dbg	16	0.0	N/A	N/A
arduino:samd:mkrzero	8	0.0	0	0.0

Click for full report CSV

Board,examples/Arduino_Debug_Basic<br>flash,%,examples/Arduino_Debug_Basic<br>RAM for global variables,%,examples/Arduino_Debug_Advance<br>flash,%,examples/Arduino_Debug_Advance<br>RAM for global variables,%
arduino:avr:leonardo,80,0.28,0,0.0,80,0.28,0,0.0
arduino:avr:mega,80,0.03,0,0.0,80,0.03,0,0.0
arduino:avr:nano,80,0.26,0,0.0,80,0.26,0,0.0
arduino:mbed_nano:nano33ble,0,0.0,0,0.0,,,,
arduino:mbed_nano:nanorp2040connect,14,0.0,0,0.0,,,,
arduino:mbed_portenta:envie_m4,0,0.0,0,0.0,,,,
arduino:mbed_portenta:envie_m7,0,0.0,0,0.0,,,,
arduino:megaavr:nona4809,62,0.13,0,0.0,62,0.13,0,0.0
arduino:sam:arduino_due_x_dbg,16,0.0,N/A,N/A,,,,
arduino:samd:mkrzero,8,0.0,0,0.0,,,,

[aentinger]

LGTM 👍