Add UV inline dependencies - #6

This adds inline script dependencies for uv.

For people who have uv installed, running uv run decrypt.py will

• create a virtual environment
• install the defined dependencies
• use the venv python interpreter to run the script

PS: Thanks for the great write-up and decrypt script!
I was able to export my ~40 2FA accounts from Twilio! 🙏

PS2: I was desperately looking for that GitHub sponsor button on this repo 😉 🤑