Load and calculate Destination of files for kustomize localize (#4652)

* Implement file localization for localize

Implement file localization for new command kustomize localize

* Patch file localization

Fix lint errors, address feedback, begin transition to file loader from
localizer

* Add Repo() to Loader

* Implement locLoader factory + cleanup

* Add domain to RepoSpec

Fix ssh relative url host parsing for non-github domain on the side

* Implement Load(), New(), Root(), Dst() for LocLoader

* Address repospec code review comments

* Address 1st round of code review feedback

* Address feedback #2

Removed localized path calculations to cover edge case and improve readability.

* Remove ldr Cleanup logging

* Address code review round #3

* Address code review feedback #4

kyaml/filesys/fsondisk_test.go

@@ -155,7 +155,6 @@ func TestConfirmDirDisk(t *testing.T) {
 
 func TestReadFilesRealFS(t *testing.T) {
 	req := require.New(t)
-
 	fSys, testDir := makeTestDir(t)
 
 	dir := filepath.Join(testDir, "dir")