feat: add ser/configrs

__serialization/configrs/src/main.rs

@@ -0,0 +1,14 @@
+use std::collections::HashMap;
+
+fn main() {
+    let mut settings = config::Config::default();
+    settings
+        // Add in `./Settings.toml`
+        .merge(config::File::with_name("Settings")).unwrap()
+        // Add in settings from the environment (with a prefix of APP)
+        // Eg.. `APP_DEBUG=1 ./target/app` would set the `debug` key
+        .merge(config::Environment::with_prefix("APP")).unwrap();
+
+    // Print out our settings (as a HashMap)
+    println!("{:?}", settings.try_into::<HashMap<String, String>>().unwrap());
+}