feat: Add /print command for authorized users

This commit introduces a new `/print` command that is restricted to authorized users.

The main changes are:
- Created `app/modules/print.py` to house the handler for the new command.
- The handler uses the existing `is_admin` function from `app/permissions.py` to check for authorization.
- Integrated the new command into `app/main.py`.
- Updated `tasks.md` to document the new feature.

app/modules/print.py

@@ -0,0 +1,13 @@
+# app/modules/print.py
+
+from telegram import Update
+from telegram.ext import ContextTypes
+from app.permissions import is_admin
+
+async def print_handler(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
+    """Handles the /print command."""
+    chat_id = update.effective_chat.id
+    if is_admin(chat_id):
+        await update.message.reply_text("This is a restricted command for authorized users.")
+    else:
+        await update.message.reply_text("You are not authorized to use this command.")