Feature: Allow for native Jinja2 code in card

[jacauc]

Would love to have the ability to natively add jinja2 code into my bubble card, for example to dynamically change the name or icon.

Please consider adding this feature

[Clooos]

Hi! Jinja templates will finally be available in v3.4.0! You will be able to use these to customize names, icons, sub-buttons and styles 🍻