Db, first commit of work

This also touches atproto/src/lib.rs which may be a problem for the
rebase~

Adds migrations and all the other stuff.

Db, Commit two, everything is looking pretty

Db, add atproto error support

Db, rename spoor to direct, implement sessions

Db, add activity ingestor, fix type name

activity has its type name Authority instead of Uri for some reason? So
that is no longer an issue.

EVERYTHING IS STILL UNTESTED BABY~

db/Cargo.toml

@@ -4,6 +4,8 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
+thiserror = "2.0.12"
+atproto.workspace = true
 async-trait.workspace = true
 atproto = { workspace = true, features = ["sqlx-support"] }
 sqlx = { version = "0.8.6", features = ["postgres", "runtime-tokio"] }