CLN: consolidate arrow roundtrip tests for nullable dtypes in base masked tests
We recently splitted the test_boolean and test_integer in multiple files in each a directory, but I think a next step can be to deduplicate some of the common tests for the different nullable/masked dtypes. 
Certainly given that we are going to add float tests as well (cfr https://github.com/pandas-dev/pandas/pull/34307)

Starting here with the arrow-compat/roundtrip tests for both integer/boolean.

I didn't yet write a full blown conftest.py and just defined a `data` fixture inline, since here it's just a single file. But if adding more later, we probably want to move this to a `conftest.py` (or a base test class), although this duplicates a bit the `tests/arrays/integer/conftest.py` and `tests/arrays/boolean/conftest.py`

cc @dsaxton @jbrockmendel 
seems reasonable if there are follow-ups you have in mind but are liable to not get to right away, can you either add TODO comments or open issue(s) thanks @jorisvandenbossche  > if there are follow-ups you have in mind but are liable to not get to right away, can you either add TODO comments or open issue(s)

None specific, but just in general any test in `integer/` and `boolean/` that is almost identical for both directories and could be shared, can be consolidated