Add formatPath function for existing files

src/utils/file-utils/path-utils.ts

@@ -1,3 +1,18 @@
+/** Formats the given path. **The path must be a real file or folder!** */
+export function formatPath(path: string): string {
+	assert(isfile(path) || isfolder(path), `'${path}' does not point to a folder or file`);
+
+	// Replace all slashes with forward slashes
+	path = path.gsub("\\", "/")[0];
+
+	// Add a trailing slash
+	if (isfolder(path)) {
+		if (path.sub(-1) !== "/") path += "/";
+	}
+
+	return path;
+}
+
 /** Adds a trailing slash if there is no extension. */
 export function addTrailingSlash(path: string): string {
 	path = path.gsub("\\", "/")[0];