Add simple rust implementation

Cargo.toml

@@ -0,0 +1,25 @@
+[package]
+name = "library_updater"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+sql-parse = "0.8.0"
+tokio = { version = "1.21.1", features = ["full"] }
+tokio-postgres = { version = "0.7.6", features = ["with-chrono-0_4"] }
+deadpool-postgres = "0.10.2"
+async-trait = "0.1.57"
+chrono = "0.4.22"
+futures =  "0.3.24"
+reqwest = { version = "0.11.11", features = ["stream"] }
+tokio-util = { version = "0.7.3", features = ["compat"] }
+async-compression = { version = "0.3.14", features = ["futures-io", "gzip"] }
+sentry = "0.27.0"
+lazy_static = "1.4.0"
+log = "0.4"
+env_logger = "0.9.0"
+serde = { version = "1.0.144", features = ["derive"] }
+serde_json = "1.0.85"
+tokio-cron-scheduler = "0.8.1"