ArrayInterface handler for cuDF DataFrame cannot yet handle Boolean columns

[hcho3]

Since the ArrayInterface class in XGBoost does not yet support Boolean columns, it throws an error

/workspace/src/c_api/../data/array_interface.h:500: Boolean-1 is not supported.

whenever Boolean columns are passed in. The error is only relevant for cuDF DataFrames, since the handler for Pandas DataFrame converts Boolean columns into float type.

Context. I encountered this error while working on #10175. Starting from Pandas 2.0, pd.get_dummies() returns Boolean type, instead of uint8 (pandas-dev/pandas#48022).

[trivialfis]

We need to use the bit mask for accessing boolean columns.