ENH: `Styler.show` shorthand alternative to `hide`
- [x] closes #42533
- [x] tests added / passed
- [x] whatsnew entry

Provides a convenient shorthand for displaying only specified rows as data exploration:

### Example

<img width="772" alt="Screenshot 2022-01-03 at 17 59 15" src="https://user-images.githubusercontent.com/24256554/147958089-66137713-647c-49e2-b1e5-2577a04e4ad1.png">

### Rendered Docstring

<img width="554" alt="Screenshot 2022-01-03 at 18 03 07" src="https://user-images.githubusercontent.com/24256554/147958483-ea378ee8-ff6e-438f-82cd-53e14147f1ab.png">
<img width="538" alt="Screenshot 2022-01-03 at 18 03 16" src="https://user-images.githubusercontent.com/24256554/147958492-4d5cd2e8-8ea2-43fa-97a8-652a7dbd957e.png">


why not just expose `.head()`, `.tail()`, `.iloc[...]` ? > why not just expose `.head()`, `.tail()`, `.iloc[...]` ?

This would have to be a separate Styler implementation of the above. The point is to be able to apply the style functions to the table in entirety but just display certain rows. I.e. highlighting a max in a full-column, yet the section displayed might not contain that max. If you subselect prior to the styling application it loses its purpose in most cases. This pull request is stale because it has been open for thirty days with no activity. Please [update](https://pandas.pydata.org/pandas-docs/stable/development/contributing.html#updating-your-pull-request) and respond to this comment if you're still interested in working on this. Hi @attack68 , it seems that the "pandas-dev.pandas" build has failed. (conflicts in a branch). So this issue is still open. Closing this, I have a different idea for **docs** instead which does not include new methods > Closing this, I have a different idea for **docs** instead which does not include new methods

What are your ideas? Where can they be found in the docs? 

It's frustrating that `max_rows` can not be applied to a stylized dataframe as discussed in #42533