Queries now use AppHandle instead of Window (#189)

src-tauri/yaak-models/src/error.rs

@@ -4,10 +4,16 @@ use thiserror::Error;
 pub enum Error {
     #[error("SQL error: {0}")]
     SqlError(#[from] rusqlite::Error),
+
+    #[error("SQL Pool error: {0}")]
+    SqlPoolError(#[from] r2d2::Error),
+
     #[error("JSON error: {0}")]
     JsonError(#[from] serde_json::Error),
+
     #[error("Model not found {0}")]
     ModelNotFound(String),
+
     #[error("unknown error")]
     Unknown,
 }