Remove Media files for a removed tenant when using AWS S3

[Piedone]

Is your feature request related to a problem? Please describe.

If you remove a tenant, its Media files are only removed if they use the default local storage in App_Data. When using AWS S3 though, they remain.

Similar to #16403.

Describe the solution you'd like

Add an IShellRemovingHandler to OrchardCore.Media.AmazonS3 that removes Media files from S3 too. This should support both removing the whole bucket if tenants' Media are stored in separate buckets, or just the "folder" if a single container is used.

Describe alternatives you've considered

You can also have a custom IShellRemovingHandler implementation for this, but I think this should be a core functionality.

[github-actions]

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