Fix: Suppress type checking errors for unix-specific imports

Author: pyob-bot

src/pyob/core_utils.py

@@ -288,8 +288,8 @@ def _win32_input(self, start_time: float, timeout: int) -> str:
             time.sleep(0.1)
 
     def _unix_input(self, start_time: float, timeout: int) -> str:
-        import termios
-        import tty
+        import termios  # type: ignore
+        import tty  # type: ignore
 
         input_str: str = ""
         fd = sys.stdin.fileno()