Feat: Allow downloading QR Code in multiple formats

Description:

Current Behavior:

The current version of SmartyURL only allows downloading QR Code in SVG format.

Desired Behavior:

It would be beneficial to have the ability to download QR Code in multiple formats, not limited to just SVG. This could include commonly used formats such as PNG, JPEG, or others.

Steps to Reproduce (if applicable):

3. Attempt to download the QR Code in a format other than SVG