[wip] feat(forge): add buffer dump to debugger

[emo-eth]

Motivation

Since the debugger doesn't allow copy/paste, and buffers can be large, it can be useful to dump buffers to disk for further manual debugging.

Closes #7112

Solution

• add a dump action w ("write") to the debugger and update help string
• write to {cwd}/debug/debug_dump_{contract name}_{address}_{timestamp}.json
• update .gitignoreTemplate to ignore debug/

Thoughts:

• it might be nice to dump more than just buffers
• maybe d makes more sense as a key? but w feels more aligned with vim-esque keybindings and writing to disk
• not sure if there are read/write concerns
• maybe folder path logic could be more robust to always write to {project root}/debug/x.json

[gakonst]

Thanks for all the recent debugger improvements, tagging @klkvr @DaniPopes so they have their eyes on this for review & improvements

[zerosnacks]

Possibly superseded by #7375

Would be great to get your feedback on that ticket @emo-eth + possibly extend the feature with the proposed keybinding