Added uptime metrics for radarr

Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 anyhow = "1.0.68"
-chrono = "0.4"
+chrono = { version = "0.4", features = ["serde"] }
 clap = { version = "4.0.30", features = ["help", "usage", "error-context", "derive"] }
 confy = { version = "0.5.1", default_features = false, features = ["yaml_conf"] }
 crossterm = "0.25.0"