feat: add loading spinner

Signed-off-by: Dominik Willner <th33xitus@gmail.com>

kiauh/utils/spinner.py

@@ -0,0 +1,33 @@
+import sys
+import threading
+import time
+
+
+class Spinner:
+    def __init__(self, message="Loading", delay=0.2):
+        self.message = f"{message} ..."
+        self.delay = delay
+        self._stop_event = threading.Event()
+        self._thread = threading.Thread(target=self._animate)
+
+    def _animate(self):
+        animation = ["◜", "◝", "◞", "◟"]
+        while not self._stop_event.is_set():
+            for char in animation:
+                sys.stdout.write(f"\r{char} {self.message}")
+                sys.stdout.flush()
+                time.sleep(self.delay)
+                if self._stop_event.is_set():
+                    break
+        sys.stdout.write("\r" + " " * (len(self.message) + 1) + "\r")
+        sys.stdout.flush()
+
+    def start(self):
+        self._stop_event.clear()
+        if not self._thread.is_alive():
+            self._thread = threading.Thread(target=self._animate)
+            self._thread.start()
+
+    def stop(self):
+        self._stop_event.set()
+        self._thread.join()