ENH: Add ods writer
- [x] closes #27222
- [x] tests added / passed
- [x] passes `black pandas`
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry
- [x] add support for startrow and startcol parameters
@WillAyd I am not sure where "the lot of copy paste" comes from. It is true that I started off from `_xlwt.py`, but there are just 20 unmodified lines of the 321. Most of which are the standard methods required for each engine. Hello @roberthdevries! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:

















There are currently no PEP 8 issues detected in this Pull Request. Cheers! :beers: 

##### Comment last updated at 2020-06-24 12:34:37 UTC Can you merge master - thanks! Rebased to master @roberthdevries can you merge master and will look again. can you rebase and update Great thanks @roberthdevries  You're welcome