test: Use insta, closes #57

Use insta for UI tests, adds snapshots of UI layout

src/app_data/container_state.rs

@@ -35,7 +35,8 @@ impl ContainerId {
     }
 
     /// Only return first 8 chars of id, is usually more than enough for uniqueness
-    /// TODO container id is a hex string, so can assume that 0..=8 will always return a 8 char ascii &str - need to update tests to use real ids, or atleast strings of the correct-ish length
+    /// TODO container id is a hex string, so can assume that 0..=8 will always return a 8 char ascii &str
+	/// need to update tests to use real ids, or atleast strings of the correct-ish length
     pub fn get_short(&self) -> String {
         self.0.chars().take(8).collect::<String>()
     }

src/app_data/mod.rs

@@ -420,8 +420,8 @@ impl AppData {
     }
 
     /// Get all the ContainerItems
-	/// Thnk this allow block can be removed with the 1.87 release of Clippy
-	#[allow(clippy::missing_const_for_fn)]
+    /// Thnk this allow block can be removed with the 1.87 release of Clippy
+    #[allow(clippy::missing_const_for_fn)]
     pub fn get_container_items(&self) -> &[ContainerItem] {
         &self.containers.items
     }