[BUG] Appsettings override when application update

[picolino]

🐛 Bug Report

When application update, current appsettings.yaml file from current install directory overrides by new file from the installer.
This behaviour leads to overwrite all settings that was set previously.

Expected behavior

When application update, we should add missing configuration keys, but not overwrite already placed config keys.
Or make other migration behaviour that will be able to migrate config files more flexible while update.

Reproduction steps

1. Install previous release
2. Change appsettings.yaml file
3. Update application to latest release using installer
4. appsettings.yaml file became overwritten

Version: 1.0.2

[picolino]

Also, on macOS system - appsettings.yaml is a part of SSC.app bundle.
Apple recommends to not modify bundle files in runtime, so we should think about not store application settings into bundle itself on macOS

[picolino]

Current version of SSC is not overriding appsettings.yaml file when install on Windows and Linux.
But for macOS it is still should be placed directly into Bundle. It is not much pain due to not so often usage on macOS systems as server-side, but it definitely will be problem in future.