Allow badge customization

[bemble]

On some cards I want to display a badge on the icon. For example, I have multiple alarm panels, sometimes they have a different state and I want to see it on the alarm panel card:

The idea is to add these card configuration:

• badge_sensor: the sensor used to know whether the badge should be displayed or not
• badge_color: the badge color
• badge_icon: the icon displayed in the badge

Problem raised: the editor will have a lot of information, it would be great to create foldable sections or tabs.

[SaSa1983]

for template cards/chips use the template syntax

also i would restructure those options

badge:
show_if: {{ states('sensor.temperature') > 50 }}
icon: mdi:icon
color: yellow

Using "show_if" with template syntax instead of a binary sensor allows more flexibility.
The template should return a boolean.

icon or color should support template syntax for more complex selections

[johannes-z]

I'm really missing the badge options for the entity card. @piitaya - do you want this in mushroom? I could open a PR for the entity card if so.