DOC: Validate docstrings for tseries.offsets.BusinessDay

[doughillyer]

• closes DOC: Enforce Numpy Docstring Validation (Parent Issue) #58063 (partially)
• Tests added and passed if fixing a bug or adding a new feature
• All code checks passed.
• Added type annotations to new arguments/methods/functions.
• Added an entry in the latest doc/source/whatsnew/vX.X.X.rst file if fixing a bug or adding a new feature.

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This PR validates and fixes the docstrings for pandas.tseries.offsets.BusinessDay and several of its properties to conform with the NumPy docstring standard.

The following changes were made:

• Moved the Parameters section from the BusinessDay class docstring to the __init__ method of the parent BusinessMixin class to resolve a PR02 validation error. This aligns with the NumPy docstring standard.
• Added fully-featured docstrings (including See Also and Examples) to the .calendar, .holidays, and .weekmask properties to resolve GL08 errors.
• Removed the now-passing methods from the ignore list in ci/code_checks.sh.