Add a save output to file option to serial monitor

[orjanv]

Describe the request

It would be very helpful to have the option to save the file content in serial monitor to a text file.

Describe the current behavior

The only way to save Serial Monitor contents to file is by copy and paste.

Arduino IDE version

d6a4b0f

Operating system

All

Operating system version

Any

Additional context

Additional requests:

• Export to File/Select All function for Serial Monitor #1654
• Save serial monitor output as log #1839
• Add a save output to file option to serial monitor #549 (comment)
• Add a save output to file option to serial monitor #549 (comment)
• Serial Monitor needs an "Export output to file" option Arduino#9479
• https://forum.arduino.cc/t/upgrade-the-serial-monitor-for-better-function/980128
• https://forum.arduino.cc/t/would-the-ability-to-copy-from-or-save-serial-monitor-be-an-evil-thing/1123908
• https://forum.arduino.cc/t/bug-report-serial-monitor/1297087

Issue checklist

• I searched for previous requests in the issue tracker
• I verified the feature was still missing when using the latest nightly build
• My request contains all necessary details

[mklemarczyk]

Would be great for long monitoring. To inspect the results the output is terrible, as you can not select and copy easily.
More over I am worried about buffer that will get depleted when loggings many messages in 3h window.

Please make a way to store serial monitor into file. It does not need to be perfect. One write to file each 5 min is enough or write when we press the button.

Could be useful as MVP to make serial monitor in CLI version. Therefore user can control what to do with messages.