including the last inserted row id if available

[marekyggdrasil]

I find it very useful to have the id of the last row that has just been inserted.

Before this change, executing insert query would result in something of the form

{'error': None, 'items': [], 'row_count': 1}

after this change we get something like

{'error': None, 'items': [], 'lastrowid': 7, 'row_count': 1}

[aosingh]

Hi @marekyggdrasil

Thank you for creating a pull request.

We could simplify the code and remove variables lastrowid and ret

As documented here, lastrowid is either set or it is None. So, something like this would be simple.

if self._cursor.lastrowid:
    result['lastrowid'] = self._cursor.lastrowid

[marekyggdrasil]

Great suggestion @aosingh thanks for reviewing the PR. I just implemented the change you requested. Feel free to let me know if something more is required.