Yet another PlodWare SQLite-OLE update

The latest version (2022-03-21) has the newest SQLite (3.38.1).

Not to sure why I did it, but I have have included the SQLite loadable extension append.vfs

I might find a good use for it, it seems interesting.

I have also made it possible to use the SQLite run-time loadable extension functionality . There is a PWBasic command to switch the functionality on/off (default is off), whilst the actual accessing of the target run-time loadable extension is controlled using a SQLite command .  I tested this with various extensions ( including: uuid, SpatiaLite/mod_spatialite).