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: add bit_and,bit_or,bit_xor,bool_add,bool_or #496
• bit_or: add bit_and,bit_or,bit_xor,bool_add,bool_or #496
• bit_xor: add bit_and,bit_or,bit_xor,bool_add,bool_or #496
• bool_and: add bit_and,bit_or,bit_xor,bool_add,bool_or #496
• bool_or: add bit_and,bit_or,bit_xor,bool_add,bool_or #496
• first_value: add first_value last_value #498
• last_value: add first_value last_value #498

Statistical

• regr_avgx: add regr_* functions #499
• regr_avgy: add regr_* functions #499
• regr_count: add regr_* functions #499
• regr_intercept: add regr_* functions #499
• regr_r2: add regr_* functions #499
• regr_slope: add regr_* functions #499
• regr_sxx: add regr_* functions #499
• regr_sxy: add regr_* functions #499
• regr_syy: add regr_* functions #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 #498

• first_value
• last_value