ARROW-10637: [Rust] Added examples to some boolean kernels.
ARROW-10637: [Rust] Added examples to some boolean kernels.

Just a small quality of life.

Closes #8699 from jorgecarleitao/add_examples

Authored-by: Jorge C. Leitao <dfffc62510208f06492f17a48dc6ce87aa15abf6@gmail.com>
Signed-off-by: Andrew Lamb <02e0a999c50b1f88df7a8f5a04e1b76b35ea6a88@nerdnetworks.org>

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