Added the definition for the npm package simple-url-cache (#11296)

* Added the definition for the npm package simple-url-cache

https://www.npmjs.com/package/simple-url-cache

* - Some problems with shells.js missing the touch fucntion deifnition

* More details on the touch parameters - nice screenshot btw

shelljs/shelljs.d.ts

@@ -128,7 +128,7 @@ declare module "shelljs"
      * @param {string} dest   The destination.
      */
     export function mv(source: string, dest: string): void;
-    
+
     /**
      * Moves files. The wildcard * is accepted.
      * @param {string[]} source The source.
@@ -436,7 +436,7 @@ declare module "shelljs"
      * Object containing environment variables (both getter and setter). Shortcut to process.env.
      */
     export var env: { [key: string]: string };
-    
+
     /**
      * Executes the given command synchronously.
      * @param  {string}                 command The command to execute.
@@ -511,6 +511,27 @@ declare module "shelljs"
      */
     export function error(): string;
 
+
+
+    export function touch(...files: string[]): void;
+    export function touch(files: string[]): void;
+
+    type TouchOptionsLiteral = "-a" |  "-c" | "-m" | "-d" | "-r";
+
+    export function touch(options: TouchOptionsLiteral, ...files: string[]): void;
+    export function touch(options: TouchOptionsLiteral, files: string[]): void;
+
+    /**
+     * Update the access and modification times of each FILE to the current time. A FILE argument that does not exist is created empty, unless -c is supplied
+     */
+    type touchOptionsArray = {
+        '-d'?: string;
+        '-r'?: string;
+    };
+
+    export function touch(options: touchOptionsArray, ...files: string[]): void;
+    export function touch(options: touchOptionsArray, files: string[]): void;
+
     // Configuration
 
     interface ShellConfig