added database crate, "settings" with migrations and queries, running migrations on web startup

crates/database/src/lib.rs

@@ -0,0 +1,11 @@
+pub(crate) mod error;
+mod tables;
+
+/// Re-export sqlx
+pub use sqlx;
+
+/// Error
+pub use self::error::Error;
+
+/// Export tables
+pub use self::tables::*;