Fix UI version hanging on image download (#40)

Done by using task::spawn_blocking and blockon

src/steamgriddb/settings.rs

@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Serialize, Deserialize,Clone)]
 pub struct SteamGridDbSettings {
     pub enabled: bool,
     pub auth_key: Option<String>,