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

crates/database/queries/settings/get.sql

@@ -0,0 +1,9 @@
+select id,
+       created_at as "created_at: DateTime<Utc>",
+       updated_at as "updated_at: DateTime<Utc>",
+       business_name,
+       business_logo
+
+from settings
+
+where id is 0