0.4.0

This version adds three new scripts:

• scripts/package_docc.sh builds DocC for a Swift package.
• scripts/package_framework.sh builds an XCFramework for a Swift package.
• scripts/package_version.sh generates a git version tag for a Swift package.

This version also adds a sync_to.sh script that syncs scripts to another folder.

This version also renames version_validate_project.sh to version_validate_target.sh.