Implemented basic stats functionality and started setting up menu

src/app/radarr.rs

@@ -1,16 +1,10 @@
+use chrono::Duration;
+
 use crate::network::radarr::DiskSpace;
 
 #[derive(Default, Debug)]
 pub struct RadarrData {
-    pub free_space: u64,
-    pub total_space: u64,
-}
-
-impl From<&DiskSpace> for RadarrData {
-    fn from(disk_space: &DiskSpace) -> Self {
-        RadarrData {
-            free_space: disk_space.free_space.as_u64().unwrap(),
-            total_space: disk_space.total_space.as_u64().unwrap()
-        }
-    }
+  pub free_space: u64,
+  pub total_space: u64,
+  pub version: String,
 }