Map-card: a slightly improved map-card

[Ildar_Gabdullin]

An example of adding additional info like a speed on a map (from here):

code

  - type: custom:map-card
    entities:
      - entity: device_tracker.virtual_tracker_1
      - entity: device_tracker.virtual_tracker_2
      - entity: device_tracker.virtual_tracker_3
    card_mod:
      style: |
        {% for ENTITY in config.entities -%}
        map-card-entity-marker[entity-id='{{ENTITY.entity}}']:after {
          content: "{{state_attr(ENTITY.entity, 'speed') | int(default=0)}} m/s";
          color: cyan;
          font-size: 12px;
          text-align: center;
          display: block;
          width: 64px;
          justify-self: center;
        }
        {%- endfor %}