feat: add config command (#2892)

Signed-off-by: Keith Zantow <kzantow@gmail.com>

cmd/syft/internal/options/linux_kernel.go

@@ -1,5 +1,7 @@
 package options
 
+import "github.com/anchore/clio"
+
 type linuxKernelConfig struct {
 	CatalogModules bool `json:"catalog-modules" yaml:"catalog-modules" mapstructure:"catalog-modules"`
 }
@@ -9,3 +11,11 @@ func defaultLinuxKernelConfig() linuxKernelConfig {
 		CatalogModules: true,
 	}
 }
+
+var _ interface {
+	clio.FieldDescriber
+} = (*linuxKernelConfig)(nil)
+
+func (o *linuxKernelConfig) DescribeFields(descriptions clio.FieldDescriptionSet) {
+	descriptions.Add(&o.CatalogModules, `whether to catalog linux kernel modules found within lib/modules/** directories`)
+}