This commit introduces the AuthService class, which encapsulates the logic for signing in with Google and GitHub using Firebase Authentication. The class provides methods for initiating the OAuth flows for both providers and for signing out the user.
- Implemented `signInWithGoogle()` to handle Google Sign-In.
- Implemented `signInWithGitHub()` to handle GitHub Sign-In via popup.
- Added `signOut()` method for logging out the user.
- Added `getCurrentUser()` method to fetch the currently authenticated user.
This commit introduces the `BenchmarkService` class, which encapsulates API calls related to benchmarking operations. The class includes two methods:
1. `generateReport`: Takes a `ReportRequestBody` object as input and performs a POST request to the `/reports` URL, serializing the object to JSON format.
2. `pollUpdates`: Accepts a UNIX UTC timestamp as an argument and performs a GET request to the `/updates?last_update_time=<timestamp>` URL.
Both methods use the `RestApiUtility` for making HTTP requests and are designed to work with different base URLs, controlled by the `ApiType` enum.
Added the downloadArtifact method to the ChatService class, enabling the download of artifacts in the Flutter web application. The function uses the dart:html package to trigger a browser-based file download, allowing users to save artifacts locally. This implementation complements the existing REST API and enhances the user experience.
