Deprecate last_needle functionality in Guibot

[pevogam]

This functionality is an early implementation from the time we did not have image logging and could be confusing for newcomers that see both a last_needle and possibly some general image logging. It is also undermaintained with some incorrect type errors.

The best approach around it would be not to drop it entirely but to integrate it in the image logging as a "near minimal verbosity level" that just outputs images on find errors or similar behavior.

[pevogam]

Best approach so far is not to drop it entirely but to integrate it in the image logging as a "near minimal verbosity level" that just outputs images on find errors or similar behavior.