add support for libsql (turso)

[dezren39]

No description provided.

[dezren39]

this only handles the sqlite portion, fs on disk is unchanged. for sqlite, i'm guessing litestream could work instead of libsql/turso too. idk if storing fs in sqlite is a pra ctical/good idea. might be better to use some other replication there, but it'd be neat to be built in. are you guys still happy with badger on client side? i'm still not clear how kv connects into i guess the fs folder? i wondered about what kinds of kv might work on more hosts, i didnt like running something like redis etc, but i did consider sqlite on client side too. one could use fossil uploads files into sqlite, or use fossil directly, or extend how users can post 'news' already to somehow store within the database. but i think once you are uploading that kind of files regularly you would want to leave sqlite maybe, or shard to many sqlite files.

[dezren39]

i haven't super pressure tested this or anything at all, just confirmed it made tables and accepted users