refactor: dump database to json

Cargo.toml

@@ -1,6 +1,7 @@
 [workspace]
 members = ["sdgb-api", "sdgb-cli"]
 resolver = "3"
+default-members = ["sdgb-cli"]
 
 [workspace.dependencies]
 sdgb-api = { path = "./sdgb-api", default-features = false }
@@ -15,6 +16,7 @@ serde_json = "1.0.141"
 strum = { version = "0.27.2", features = ["derive"] }
 tokio = { version = "1", features = ["rt-multi-thread"] }
 compio = { version = "0.15.0", features = ["runtime"] }
+redb = "2.6.1"
 
 [profile.release]
 lto = true