Add missing aggregate functions

[mesejo]

Is your feature request related to a problem or challenge? Please describe what you are trying to do. I would like access to the full set of aggregate functions defined in the Rust library.

Describe the solution you'd like I would like to have Python bindings for the following functions:

General

• [ ] bit_and: #496
• [ ] bit_or: #496
• [ ] bit_xor: #496
• [ ] bool_and: #496
• [ ] bool_or: #496
• [ ] first_value: #498
• [ ] last_value: #498

Statistical

• [ ] regr_avgx: #499
• [ ] regr_avgy: #499
• [ ] regr_count: #499
• [ ] regr_intercept: #499
• [ ] regr_r2: #499
• [ ] regr_slope: #499
• [ ] regr_sxx: #499
• [ ] regr_sxy: #499
• [ ] regr_syy: #499

Describe alternatives you've considered None

[viirya]

Please add your PR on the particular functions it works on, in order to avoid conflict.

[jiangzhx]

I'm working on https://github.com/apache/arrow-datafusion-python/pull/498

• first_value
• last_value