feat: Delete old version when updating mod

Deletes all Northstar mods based on Thunderstore mod string before
installing new version.

This way we can clean up old files from mods before installing new
version

src-tauri/src/mod_management/mod.rs

@@ -435,6 +435,18 @@ pub async fn fc_download_mod_and_install(
     // Get Thunderstore mod author
     let author = thunderstore_mod_string.split('-').next().unwrap();
 
+    // Delete previous version of mod if already installed
+    // This way we ensure that any old files/folders are removed
+    match delete_thunderstore_mod(game_install.clone(), thunderstore_mod_string.to_string()) {
+        Ok(()) => (),
+        Err(err) => {
+            // Error can include the mod being found installed cause this is the first time it's being installed
+            // As such we just ignore any error (but still log it just in case)
+            log::info!("{err}");
+            ()
+        }
+    };
+
     // Extract the mod to the mods directory
     match thermite::core::manage::install_mod(
         author,