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_worker/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "libertas_worker"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+libertas_core = { path = "../libertas_core" }
+libertas_infra = { path = "../libertas_infra" }
+
+anyhow = "1.0.100"
+async-nats = "0.44.2"
+serde = { version = "1.0.228", features = ["derive"] }
+serde_json = "1.0.145"
+tokio = { version = "1.48.0", features = ["full"] }
+sqlx = { version = "0.8.6", features = [
+    "runtime-tokio",
+    "postgres",
+    "uuid",
+    "chrono",
+    "sqlite",
+] }
+futures-util = "0.3.31"
+bytes = "1.10.1"
+uuid = { version = "1.18.1", features = ["v4", "serde"] }