ENH: Support for column specific col_space argument for frame.to_html…
…() method (#28917)

- [ ] closes #28917
- [ ] tests added / passed
- [ ] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] what's new: the col_space argument of to_html() can also take a dict or list to specify different col_space for different columns. 

@AakankshaAshok is this still active? Can you add test(s)? > @AakankshaAshok is this still active? Can you add test(s)?

@WillAyd Yes. Will do. Any other suggestions? Not for now; can file more comments after test(s) are added @AakankshaAshok still active? If so please merge master Hi @AakankshaAshok  - sorry to chase you up, just wanted to ask whether you're still working on this :) Closing as stale; ping if you'd like to pick back up