Rename conda.exe in sh installers

[marcoesters]

The conda-standalone executable is extracted into conda.exe. This can be confusing for users, support, and also to security programs. There is a documented instance of Arconis quarantining this file: ContinuumIO/anaconda-issues#13311

This may be a general problem with Arconis: https://forum.acronis.com/forum/acronis-cyber-protect-home-office-forum-formerly-acronis-true-image-2021/quarantine-exe-files

The binary should probably not have an exe extension. It can be named _conda, equivalent to the Windows _conda.exe binary.

[jaimergp]

There are changes in #474 that will rename and keep conda.exe around as _conda.exe (in Unix, it's deleted after the installation). We can rename to _conda if that's preferred. If you have time to review that one 🙏

[marcoesters]

I think renaming it to _conda might be better. Some security programs might get spooked to find a .exe files on a MacOS

[marcoesters]

The issue in the problem I linked was that conda.exe was quarantined during the installation.

I will find some time in the next few days to review the PR.

[jaimergp]

I think renaming it to _conda might be better. Some security programs might get spooked to find a .exe files on a MacOS

Done :)

[jaimergp]

Done in #474. Shell installers bundle _conda instead of conda.exe now.