Logging in and Signing up on the client done

Tons of bug fixes too

client/src/main.rs

@@ -1,4 +1,5 @@
-fn main() -> eframe::Result {
+#[tokio::main]
+async fn main() -> eframe::Result {
     env_logger::init(); // Log to stderr (if you run with `RUST_LOG=debug`).
 
     let native_options = eframe::NativeOptions {