feat: implemented and tested touch command

src/main/java/com/mycmd/App.java

@@ -51,6 +51,7 @@ private static void registerCommands(Map<String, Command> commands) {
         commands.put("help", new HelpCommand(commands));
         commands.put("exit", new ExitCommand());
         commands.put("ver", new VersionCommand());
+        commands.put("touch", new TouchCommand());
         commands.put("time", new TimeCommand());
         commands.put("date", new DateCommand());
     }

src/main/java/com/mycmd/commands/TouchCommand.java

@@ -0,0 +1,25 @@
+package com.mycmd.commands;
+
+import com.mycmd.Command;
+import com.mycmd.ShellContext;
+import java.io.File;
+import java.io.IOException;
+
+public class TouchCommand implements Command {
+    @Override
+    public void execute(String[] args, ShellContext context) throws IOException {
+        if (args.length < 1) {  // ✅ Check for at least 1 argument
+            System.out.println("Usage: touch <filename>");
+            return;
+        }
+
+        File file = new File(context.getCurrentDir(), args[0]);  // ✅ Use args[0]
+        if (file.createNewFile()) {
+            System.out.println("File created: " + args[0]);  // ✅ Use args[0]
+        } else {
+            // Update timestamp
+            file.setLastModified(System.currentTimeMillis());
+            System.out.println("File timestamp updated: " + args[0]);  // ✅ Use args[0]
+        }
+    }
+}