Migrate location-related structs to the file package (#1751)

* migrate location structs to file package

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* replace source.Location refs with file package call

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* fix linting

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* remove hardlink test for file based catalogers

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* remove hardlink test for all-regular-files testing

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* migrate file resolver implementations to separate package

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* fix linting

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* [wip] migrate resolvers to internal

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

* migrate resolvers to syft/internal

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>

---------

Signed-off-by: Alex Goodman <alex.goodman@anchore.com>
Signed-off-by: <>

syft/pkg/cataloger/python/parse_requirements.go

@@ -9,9 +9,9 @@ import (
 
 	"github.com/anchore/syft/internal/log"
 	"github.com/anchore/syft/syft/artifact"
+	"github.com/anchore/syft/syft/file"
 	"github.com/anchore/syft/syft/pkg"
 	"github.com/anchore/syft/syft/pkg/cataloger/generic"
-	"github.com/anchore/syft/syft/source"
 )
 
 var _ generic.Parser = parseRequirementsTxt
@@ -23,7 +23,7 @@ var (
 
 // parseRequirementsTxt takes a Python requirements.txt file, returning all Python packages that are locked to a
 // specific version.
-func parseRequirementsTxt(_ source.FileResolver, _ *generic.Environment, reader source.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
+func parseRequirementsTxt(_ file.Resolver, _ *generic.Environment, reader file.LocationReadCloser) ([]pkg.Package, []artifact.Relationship, error) {
 	var packages []pkg.Package
 
 	scanner := bufio.NewScanner(reader)