print colourless check/cross marks if NO_COLOR is set

patch bump

obsws_cli/util.py

@@ -1,6 +1,15 @@
 """module contains utility functions for the obsws_cli package."""
 
+import os
 
-def snakecase_to_titlecase(snake_str):
+
+def snakecase_to_titlecase(snake_str: str) -> str:
     """Convert a snake_case string to a title case string."""
     return snake_str.replace('_', ' ').title()
+
+
+def check_mark(value: bool) -> str:
+    """Return a check mark or cross mark based on the boolean value."""
+    if os.getenv('NO_COLOR') is not None:
+        return '✓' if value else '✗'
+    return '✅' if value else '❌'