packages lib support test

[houdini91]

Added a patch for syft to export packages command as library.

Library exported function

// LibPackagesExec run packages command as a library
// userInput: target
// cfg: syft configuration structure
// l: logger to attach to, nil  for default syft logger
// enable_ui: enable disable ui output
// Function return sbom or errors.
func LibPackagesExec(userInput string, cfg *config.Application, l logger.Logger, enable_ui bool) (*sbom.SBOM, error)```

Run library example

var cfg syft.Application
err := yaml.Unmarshal([]byte(SOME_CONFIG), &cfg)
if err != nil {
	return err
}

# Call packages with config
sbom, err := cmd.LibPackagesExec("busybox:latest", &cfg, nil, true)

    # Encode sbom to any supported output.
b, err := syft.Encode(*sbom, syft.FormatByID(syft.JSONFormatID))
if err != nil {
	os.Exit(1)
}

fmt.Println("Json output:", string(b))

[github-actions]

Benchmark Test Results

Benchmark results from the latest changes vs base branch

name                                                       time/op
ImagePackageCatalogers/ruby-gemspec-cataloger-2            1.10ms ± 3%
ImagePackageCatalogers/python-package-cataloger-2          2.88ms ± 0%
ImagePackageCatalogers/php-composer-installed-cataloger-2   908µs ± 5%
ImagePackageCatalogers/javascript-package-cataloger-2       604µs ± 4%
ImagePackageCatalogers/dpkgdb-cataloger-2                   700µs ± 1%
ImagePackageCatalogers/rpmdb-cataloger-2                    633µs ± 2%
ImagePackageCatalogers/java-cataloger-2                    13.0ms ± 3%
ImagePackageCatalogers/apkdb-cataloger-2                   1.12ms ± 1%
ImagePackageCatalogers/go-module-binary-cataloger-2        1.94µs ± 1%

name                                                       alloc/op
ImagePackageCatalogers/ruby-gemspec-cataloger-2             184kB ± 0%
ImagePackageCatalogers/python-package-cataloger-2           896kB ± 0%
ImagePackageCatalogers/php-composer-installed-cataloger-2   196kB ± 0%
ImagePackageCatalogers/javascript-package-cataloger-2       140kB ± 0%
ImagePackageCatalogers/dpkgdb-cataloger-2                   174kB ± 0%
ImagePackageCatalogers/rpmdb-cataloger-2                    163kB ± 0%
ImagePackageCatalogers/java-cataloger-2                    3.30MB ± 0%
ImagePackageCatalogers/apkdb-cataloger-2                   1.24MB ± 0%
ImagePackageCatalogers/go-module-binary-cataloger-2          672B ± 0%

name                                                       allocs/op
ImagePackageCatalogers/ruby-gemspec-cataloger-2             3.66k ± 0%
ImagePackageCatalogers/python-package-cataloger-2           14.8k ± 0%
ImagePackageCatalogers/php-composer-installed-cataloger-2   4.94k ± 0%
ImagePackageCatalogers/javascript-package-cataloger-2       2.72k ± 0%
ImagePackageCatalogers/dpkgdb-cataloger-2                   3.93k ± 0%
ImagePackageCatalogers/rpmdb-cataloger-2                    4.01k ± 0%
ImagePackageCatalogers/java-cataloger-2                     52.2k ± 0%
ImagePackageCatalogers/apkdb-cataloger-2                    4.81k ± 0%
ImagePackageCatalogers/go-module-binary-cataloger-2          15.0 ± 0%