enh: make show to all users an admin setting

[Chartman123]

• Permit to all can be controlled by an admin setting
• Makes sense to me to control also "show to all" using an admin setting

Replaces original PR #1906 by @akhil1508 where we didn't get any response anymore

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 37.50000% with 5 lines in your changes missing coverage. Please review.

Please upload report for BASE (main@b528a54). Learn more about missing BASE report. Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2306 +/- ## ======================================= Coverage ? 36.20% Complexity ? 1009 ======================================= Files ? 68 Lines ? 3806 Branches ? 0 ======================================= Hits ? 1378 Misses ? 2428 Partials ? 0 ```

[akhil1508]

Thanks a lot @Chartman123 :)