### Is your feature request related to a problem? Please describe. Expose the following: [`func createReproducibleTarballFromDir`](https://github.com/zarf-dev/zarf/blob/main/src/pkg/packager/layout/assemble.go#L880) [`func getChecksum`](https://github.com/zarf-dev/zarf/blob/main/src/pkg/packager/layout/assemble.go#L847) [`func createImageSBOM`](https://github.com/zarf-dev/zarf/blob/main/src/pkg/packager/layout/sbom.go#L115) [`func CreateSBOMViewerAsset`](https://github.com/zarf-dev/zarf/blob/main/src/pkg/packager/layout/sbom.go#L273) [`func CreateSBOMCompareAsset`](https://github.com/zarf-dev/zarf/blob/main/src/pkg/packager/layout/sbom.go#L278)
Is your feature request related to a problem? Please describe.
Expose the following:
func createReproducibleTarballFromDirfunc getChecksumfunc createImageSBOMfunc CreateSBOMViewerAssetfunc CreateSBOMCompareAsset