fix: properly display date and time placeholders for DateTimeRangeFilter

[jsheffie]

closes: #113

Changes:

• Brought in contrib/admin/widgets.py:AdminSplitDateTime and made two changes:
  • modified init to accept date_attrs and time_attrs and pass them down to the subwidgets.
  • don't pass args to this init call forms.MultiWidget.__init__(self, widgets)

Status: Alright, this is working for Django 4.2 and above. I am currently trying to figure out how to make this work on older versions of django.

Visualize

📸 Before: displays 'date' in the time fields


📸 After: displays 'time' in the time fields


[codecov-commenter]

Codecov Report

Attention: Patch coverage is 57.14286% with 6 lines in your changes missing coverage. Please review.

Project coverage is 86.70%. Comparing base (b4f6c29) to head (01ffef8). Report is 15 commits behind head on master.

Files	Patch %	Lines
rangefilter/filters.py	57.14%	6 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #112 +/- ## ========================================== - Coverage 87.45% 86.70% -0.75% ========================================== Files 9 9 Lines 606 617 +11 ========================================== + Hits 530 535 +5 - Misses 76 82 +6 ```

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[silentsokolov]

Look nice! Thanks you! I think it will take more time for testing to ensure there are no critical errors on older versions. After fix current tests