Alternative ATProto PDS implementation

add db module

Changed files
+1
src
+1
src/main.rs
··· 2 mod actor_store; 3 mod auth; 4 mod config; 5 mod did; 6 mod endpoints; 7 mod error;
··· 2 mod actor_store; 3 mod auth; 4 mod config; 5 + mod db; 6 mod did; 7 mod endpoints; 8 mod error;