feat: add date_format and hour_format settings (#904)

* feat: add date_format and hour_format settings

* fix: fix ruff validation errors

* fix: use ruff format command

* fix: Refactor code and improve some logic

* fix: remove unused import

* Added zero padding setting and implement some comments

* Add test assert property

* fix: Unclutter selector and clarify zero-padding literal

* fix: Use static strings

Co-authored-by: Tony <1414927+zfbx@users.noreply.github.com>

---------

Co-authored-by: Tony <1414927+zfbx@users.noreply.github.com>

tests/qt/test_global_settings.py

@@ -16,6 +16,9 @@ def test_read_settings():
                 page_size = 1337
                 show_filepath = 0
                 dark_mode = 2
+                date_format = "%x"
+                hour_format = true
+                zero_padding = true
             """)
 
         settings = GlobalSettings.read_settings(settings_path)
@@ -26,3 +29,6 @@ def test_read_settings():
         assert settings.page_size == 1337
         assert settings.show_filepath == 0
         assert settings.theme == Theme.SYSTEM
+        assert settings.date_format == "%x"
+        assert settings.hour_format
+        assert settings.zero_padding