feat: add application entry point

Author: arnav-on-code

main.py

@@ -0,0 +1,21 @@
+from rich.console import Console
+from rich.panel import Panel
+
+console = Console()
+def banner():
+    console.print(
+        Panel.fit(
+            "[bold cyan]LeetCode Sync[/bold cyan]\n"
+            "Automatic LeetCode → GitHub Synchronization",
+            title="v0.1.0",
+        )
+    )
+def main():
+    banner()
+
+    console.print("[green]Project initialized successfully.[/green]")
+    console.print("Next milestone: Authenticate with LeetCode.")
+
+
+if __name__ == "__main__":
+    main()