Adding code for setting up app

src/main.rs

@@ -1,10 +1,21 @@
-// TODO: Move this somewhere else
-pub const SECONDS_TO_SLEEP: u64 = 5;
-
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let args = std::env::args().collect();
+    if catapult::version::contains_version(&args) {
+        catapult::version::print_version();
+        std::process::exit(-1);
+    }
+
+    let app = match catapult::app::load_app().await {
+        Ok(app) => app,
+        Err(err) => {
+            eprintln!("Error: {err:?}");
+            std::process::exit(-1);
+        }
+    };
+
     loop {
         println!("Do some work");
-        tokio::time::sleep(tokio::time::Duration::from_secs(SECONDS_TO_SLEEP)).await;
+        tokio::time::sleep(tokio::time::Duration::from_secs(catapult::app::SECONDS_TO_SLEEP)).await;
     }
 }