Column refactoring 2

[vyasr]

Follow up to #8081. This PR 1) inlines the binary op functions in different columns (which I presume were mainly created for profiling with nvtx), 2) moves all categorical column concatenation logic into the CategoricalColumn class, which allows the deletion of certain unimplemented functions in ColumnBase that only existed to satisfy mypy, and 3) performs some cleanup in the form of removing unused properties and using the cached_property decorator where appropriate.

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[isVoid]

Minor comments, these extra helpers for binop bugged me for a while, nice work getting rid of them.

[kkraus14]

Will let @isVoid and @shwina take another pass at reviewing before we merge.

[kkraus14]

@gpucibot merge