reorg: split repo / database so settings can use db connection as well

kordophone-db/Cargo.toml

@@ -5,6 +5,7 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1.0.94"
+bincode = "1.3.3"
 chrono = "0.4.38"
 diesel = { version = "2.2.6", features = ["chrono", "sqlite", "time"] }
 diesel_migrations = { version = "2.2.0", features = ["sqlite"] }