refactor(deps): replace tokio Mutex/join!, add NetworkErrorKind enum, remove reqwest from error types

src/gitlab/graphql.rs

@@ -55,7 +55,8 @@ impl GraphqlClient {
             .await
             .map_err(|e| LoreError::GitLabNetworkError {
                 base_url: self.base_url.clone(),
-                source: Some(e),
+                kind: crate::core::error::NetworkErrorKind::Other,
+                detail: Some(format!("{e:?}")),
             })?;
 
         let status = response.status();