sqlite3: add some documentation

sqlite3: document open; optionally enable WAL

sqlite3: add runstmt helper

sqlite3: "port" missing open flags and error codes/strings

sqlite3: typo

sqlite3: fix sample code in readme

sqlite3: add a README

sqlite3: remove useless error

sqlite3: rename sqlite3 and db to "conn"

add some code that plays with sqlite3::

add flags for sqlite3

import sqlite module Still very WIP (much like everything else...) but I like how it's coming.

more to do

add a TODO file

rework the code to listen to localhost:9090 including ipv6 that is.