feat: expand workspace to include libertas_infra and libertas_worker

feat(libertas_api): add dependency on libertas_infra and async-nats

refactor(libertas_api): consolidate config loading and add broker_url

refactor(libertas_api): integrate NATS client into app state and services

feat(libertas_core): introduce config module for database and server settings

fix(libertas_core): enhance error handling with detailed messages

feat(libertas_infra): create infrastructure layer with database repositories

feat(libertas_infra): implement Postgres repositories for media and albums

feat(libertas_worker): add worker service to process media jobs via NATS

libertas_core/Cargo.toml

@@ -11,3 +11,11 @@ chrono = "0.4.42"
 futures = "0.3.31"
 thiserror = "2.0.17"
 uuid = "1.18.1"
+sqlx = { version = "0.8.6", features = [
+    "runtime-tokio",
+    "postgres",
+    "uuid",
+    "chrono",
+    "sqlite",
+] }
+serde = { version = "1.0.228", features = ["derive"] }