feat: add file module

dzgui/util/file.py

@@ -0,0 +1,15 @@
+from datetime import datetime
+from pathlib import Path
+
+
+def is_writeable(path: "Path") -> bool:
+    now = int(datetime.now().timestamp())
+    suffix = ".dzgtmp"
+    file = str(now) + suffix
+    filepath = Path(str(path) + "_" + file)
+    try:
+        filepath.touch()
+        filepath.unlink()
+        return True
+    except OSError:
+        return False