allow templates for values in tile card

[ChristophCaina]

If you want to modify the information or how a value will be shown, you need either a complete template sensor, or - you can try to use some card-mod hacks to modify the value information (secondary, for example)

I am doing this here, as an example:

type: tile
entity: sensor.lxc_samba_server_100_betriebszeit
name: letzter Start
layout_options:
  grid_columns: 4
  grid_rows: 1
vertical: false
hide_state: false
card_mod:
  style:
    ha-tile-info$: |
      .secondary {
         visibility: hidden;
       }
       .secondary:before {
         visibility: visible;
         content: "{{ as_timestamp(states(config.entity) | title) | timestamp_custom("%d.%m.%Y - %H:%M:%S") }}"
       }

This card mod will change the current value into a date / time information.
The Tile-Card looks like this:

Without card mod, it is showing the following value:

It would be really great, if you could have an option, to apply templates directly to the card, without the need of card-mod or another templated sensor.
this would allow some flexibility - by default, everything would work as known... the template option could also be just available in yaml, to be accessible for users with more experience.

[BBE-FR]

Fully support an advanced tile with templating.

I made an even more complete proposal here: #19930