Add BetaGeoBetaBinom Distribution Block (#431)

* init commit

* removed scan

* Fix logp

* Remove print statement

* Add test for logp notimplemented errors

* docstrings

* dev notebook added

* updated to vectorize_graph

* import order

* update oldest pymc_version

* Update ci.yml pymc version

* Update pyproject.toml pymc version

* WIP sample prior testing

* sample prior compared against lifetimes

* increase rtol

* remove commented code, add logp reference

* fix latex docstring

* notebook testing and misc edits

* revert latex in docstring

* add ruff ignore comment

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Co-authored-by: Ricardo Vieira <[email protected]>