System Enviroment Variable support when adding custom paths in Program plugin

[svensvond]

Able to use system enviroment variables in custom path adds.

For example: Add a custom like this %windir%\foldername

Replace "c:\shell" with %shelldir% or $env:shelldir

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[github-actions]

This issue was closed because it has been stale for 7 days with no activity. If you feel this issue still needs attention please feel free to reopen.

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[github-actions]

This issue is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[github-actions]

This issue was closed because it has been stale for 7 days with no activity. If you feel this issue still needs attention please feel free to reopen.