request: Choose what files are included/excluded from cleaning

[JaronZ]

Is there an existing issue or pull request for this feature request?

• There are no existing issues or pull requests for this feature request.

Feature description

You can configure blockenv environments to include/exclude file/directory globs from cleaning when running blockenv clean

Desired solution

Add a configuration option, either to specific environments or globally that specifies which files/directories should be included/excluded from cleaning

Considered alternatives

Not using clean or using the default files/directories for cleaning

Additional information

No response