Add Parental Control Rule features

[codecov[bot]]

Codecov Report

Attention: 46 lines in your changes are missing coverage. Please review.

Comparison is base (798f337) 67.05% compared to head (5dd8c07) 66.99%.

Files	Patch %	Lines
asusrouter/modules/parental_control.py	45.67%	44 Missing :warning:
asusrouter/asusrouter.py	33.33%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #437 +/- ## ========================================== - Coverage 67.05% 66.99% -0.07% ========================================== Files 57 57 Lines 3221 3239 +18 ========================================== + Hits 2160 2170 +10 - Misses 1061 1069 +8 ```

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