feat: 4184 gguf parser (ai artifact cataloger) part 1 (#4279)

---------
Signed-off-by: Christopher Phillips <32073428+spiffcs@users.noreply.github.com>

syft/format/internal/spdxutil/helpers/source_info.go

@@ -82,6 +82,8 @@ func SourceInfo(p pkg.Package) string {
 		answer = "acquired package info from Homebrew formula"
 	case pkg.TerraformPkg:
 		answer = "acquired package info from Terraform dependency lock file"
+	case pkg.ModelPkg:
+		answer = "acquired package info from AI artifact (e.g. GGUF File"
 	default:
 		answer = "acquired package info from the following paths"
 	}