Power user command support for directory scans (#467)

* Power-user directory source support
Signed-off-by: Mikey Strauss <mikey@scribe-security.com>

Signed-off-by: houdini91 <mdstrauss91@gmail.com>

* Remove newline

Signed-off-by: houdini91 <mdstrauss91@gmail.com>

* Shared filetree (#1)

* Shared directory resolver filetree

Signed-off-by: houdini91 <mdstrauss91@gmail.com>

* PR - change error ErrObserve to ErrPath

Signed-off-by: houdini91 <mdstrauss91@gmail.com>

* PR - share directory resolver
* Use pointer to source struct

Signed-off-by: houdini91 <mdstrauss91@gmail.com>

* Fix Lint

Signed-off-by: houdini91 <mdstrauss91@gmail.com>

syft/file/secrets_cataloger.go

@@ -50,6 +50,11 @@ func (i *SecretsCataloger) Catalog(resolver source.FileResolver) (map[source.Loc
 	for _, location := range locations {
 		stage.Current = location.RealPath
 		result, err := i.catalogLocation(resolver, location)
+		if internal.IsErrPathPermission(err) {
+			log.Debugf("secrets cataloger skipping - %+v", err)
+			continue
+		}
+
 		if err != nil {
 			return nil, err
 		}
@@ -77,7 +82,7 @@ func (i *SecretsCataloger) catalogLocation(resolver source.FileResolver, locatio
 	// TODO: in the future we can swap out search strategies here
 	secrets, err := catalogLocationByLine(resolver, location, i.patterns)
 	if err != nil {
-		return nil, err
+		return nil, internal.ErrPath{Path: location.RealPath, Err: err}
 	}
 
 	if i.revealValues {