Pandas TST: Test dir of pandas.api.*

We currently do not test the dir of submodules of pandas.api. In #48578, a test is being added for pandas.api.typing. Tests like this should be added for each of the submodules - extensions, indexers, interchange, and types.

Comment From: Snehaaa18

Hi I am a first time contributor and would like to contribute on this issue ,if open can you pls direct me on this issue ?

Comment From: Swarno-Coder

Can I work on this? I can do this if you assign me for this issue because I already admitted the problem, but I only need some of your guidance if needed. Could you do this @rhshadrach sir?😊

Comment From: Nallu-Swami

Hello @rhshadrach sir , i am a first time contributor to this project and i am willing to work on this issue.

Comment From: SecretLake

take