Pypgrest

- Adds ability to delete without providing filtering params - 5 - h/t Charlie-Henry

python
client.delete(resource="my_table", force=True)

Some minor but breaking API tweaks to allow more flexible usage. Notably:

- simplified header management and ability to set them on construction and per request
- ability to specify the resource per request rather than on construction
- better pagination/limit handling

Also adds PyPI integration via Github actions.