Support SQLite WITHOUT ROWID tables

Support SQLite WITHOUT ROWID tables

This adds support for creating tables WITHOUT ROWID in the SQLite
dialect. WITHOUT ROWID tables were introduced in SQLite version 3.8.2
(2013-12-06). They do not use an implicit rowid column as the primary
key. This may result in space and performance savings for tables without
INTEGER primary keys and tables with composite primary keys. For more
information about this feature, see the sqlite documentation [1].

[1] https://www.sqlite.org/withoutrowid.html

Fixes: #5685
### Checklist
This pull request is:

- [x] A new feature implementation
	- please include the issue number, and create an issue if none exists, which must
	  include a complete example of how the feature would look.
	- Please include: `Fixes: #<issue number>` in the commit message
	- please include tests.

Closes: #5686
Pull-request: https://github.com/sqlalchemy/sqlalchemy/pull/5686
Pull-request-sha: 2b44782d1b3d858e31ce1ff8e08e197af37344d8

Change-Id: Ifcf727b0c07c90e267b79828a8e3fd7a8260a074