fix: add platform to tesla_smart_charge binary sensor and move to templates directory

include/binary_sensors/tesla_smart_charge.yaml

@@ -1,25 +0,0 @@
-- name: tesla_charge_now
-  state: >
-    {% set deadline = states('input_datetime.tesla_charge_deadline') %}
-    {% set hours_needed = states('sensor.tesla_charge_hours_needed')|float(0)|round(0,'ceil') %}
-    {% set prices = state_attr('sensor.energidataservice','today') + state_attr('sensor.energidataservice','tomorrow') %}
-    {% set valid = [] %}
-
-    {# Filtrer kun timer før deadline #}
-    {% for p in prices %}
-      {% set slot_time = as_timestamp(strptime(p.hour,'%Y-%m-%dT%H:%M:%S')) %}
-      {% if slot_time <= as_timestamp(deadline) %}
-        {% set valid = valid + [p] %}
-      {% endif %}
-    {% endfor %}
-
-    {# Sorter efter pris #}
-    {% set sorted = valid | sort(attribute='price') %}
-
-    {# Vælg de billigste slots der dækker ladetiden #}
-    {% set cheapest = sorted[:hours_needed] %}
-
-    {# Tjek om nuværende slot er i listen #}
-    {% set now_slot = now().replace(minute=(now().minute//15)*15, second=0, microsecond=0).isoformat() %}
-    {{ cheapest | selectattr('hour','equalto',now_slot) | list | count > 0 }}
-