Add node modules and new code for release (#57)

Co-authored-by: taakleton <taakleton@users.noreply.github.com>

node_modules/@actions/io/lib/io-util.d.ts

@@ -0,0 +1,19 @@
+/// <reference types="node" />
+import * as fs from 'fs';
+export declare const chmod: typeof fs.promises.chmod, copyFile: typeof fs.promises.copyFile, lstat: typeof fs.promises.lstat, mkdir: typeof fs.promises.mkdir, readdir: typeof fs.promises.readdir, readlink: typeof fs.promises.readlink, rename: typeof fs.promises.rename, rmdir: typeof fs.promises.rmdir, stat: typeof fs.promises.stat, symlink: typeof fs.promises.symlink, unlink: typeof fs.promises.unlink;
+export declare const IS_WINDOWS: boolean;
+export declare function exists(fsPath: string): Promise<boolean>;
+export declare function isDirectory(fsPath: string, useStat?: boolean): Promise<boolean>;
+/**
+ * On OSX/Linux, true if path starts with '/'. On Windows, true for paths like:
+ * \, \hello, \\hello\share, C:, and C:\hello (and corresponding alternate separator cases).
+ */
+export declare function isRooted(p: string): boolean;
+/**
+ * Best effort attempt to determine whether a file exists and is executable.
+ * @param filePath    file path to check
+ * @param extensions  additional file extensions to try
+ * @return if file exists and is executable, returns the file path. otherwise empty string.
+ */
+export declare function tryGetExecutablePath(filePath: string, extensions: string[]): Promise<string>;
+export declare function getCmdPath(): string;