Decouple core Yaak logic from Tauri (#354)

crates/yaak-http/src/error.rs

@@ -0,0 +1,37 @@
+use serde::{Serialize, Serializer};
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("Client error: {0:?}")]
+    Client(#[from] reqwest::Error),
+
+    #[error(transparent)]
+    TlsError(#[from] yaak_tls::error::Error),
+
+    #[error("Request failed with {0:?}")]
+    RequestError(String),
+
+    #[error("Request canceled")]
+    RequestCanceledError,
+
+    #[error("Timeout of {0:?} reached")]
+    RequestTimeout(std::time::Duration),
+
+    #[error("Decompression error: {0}")]
+    DecompressionError(String),
+
+    #[error("Failed to read response body: {0}")]
+    BodyReadError(String),
+}
+
+impl Serialize for Error {
+    fn serialize<S>(&self, serializer: S) -> std::result::Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(self.to_string().as_ref())
+    }
+}
+
+pub type Result<T> = std::result::Result<T, Error>;