Initial implementation of db stuffs

Got the migrations and datastructures in. Next step is building db
utility function into the db module or client module

Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-diesel = { version = "2.3.9" }
+diesel = { version = "2.3.9", features = ["postgres_backend"] }
 quinn = "0.11.9"
 fedichat = {git = "https://git.firechicken.net/fedichat/fedichat-lib"}
 #fedichat = {path = "../fedichat-lib"}
@@ -18,3 +18,4 @@ toml = "1.1.2"
 diesel-async = { version = "0.9.0", features = ["postgres","deadpool"] }
 ctrlc-async = { version = "3.2.2", features = ["termination"] }
 rmp-serde = "1.3.1"
+diesel-derive-composite = "0.1.0"