Use Lstat method from github.com/arduino/go-paths-helper module

The github.com/arduino/go-paths-helper Go module is used for the management of filesystem paths in Arduino Lint.
Previously, this module did not provide an Lstat capability so the function from the os package was used.

An Lstat method was added in github.com/arduino/go-paths-helper@1.12.0 so it is now possible to bring this previously
inconsistent part of the path handling code into alignment with that of the rest of the Arduino Lint codebase.

Author: per1234

internal/project/project.go

@@ -146,7 +146,7 @@ func findProjectsUnderPath(targetPath *paths.Path, projectTypeFilter projecttype
 			// It is possible for a combination of symlinks to parent paths to cause project discovery to get stuck in
 			// an endless loop of recursion. This is avoided by keeping count of the depth of symlinks and discontinuing
 			// recursion when it exceeds reason.
-			pathStat, err := os.Lstat(potentialProjectDirectory.String())
+			pathStat, err := potentialProjectDirectory.Lstat()
 			if err != nil {
 				panic(err)
 			}

internal/rule/rulefunction/library.go

@@ -92,7 +92,7 @@ func LibraryContainsSymlinks() (result ruleresult.Type, output string) {
 
 	symlinkPaths := []string{}
 	for _, projectPathItem := range projectPathListing {
-		projectPathItemStat, err := os.Lstat(projectPathItem.String())
+		projectPathItemStat, err := projectPathItem.Lstat()
 		if err != nil {
 			panic(err)
 		}