add westfalen wind (#862)

Author: LKuemmel

src/components/electricity_pricing/flexible_tariffs/westfalen_wind/flexible_tariff.vue

@@ -0,0 +1,37 @@
+<template>
+  <div class="flexible-tariff-westfalen-wind">
+    <openwb-base-text-input
+      title="Benutzername"
+      subtype="user"
+      required
+      :model-value="flexibleTariff.configuration.username"
+      @update:model-value="updateConfiguration($event, 'configuration.username')"
+    />
+    <openwb-base-text-input
+      title="Passwort"
+      subtype="password"
+      required
+      :model-value="flexibleTariff.configuration.password"
+      @update:model-value="updateConfiguration($event, 'configuration.password')"
+    />
+    <openwb-base-text-input
+      title="Vertrags-Nummer (optional)"
+      :model-value="flexibleTariff.configuration.contract_id"
+      @update:model-value="updateConfiguration($event, 'configuration.contract_id')"
+    >
+      <template #help>
+        Bei mehreren Verträgen kann zusätzlich die Vertrags-Nummer angegeben werden, um die Preise dieses Vertrags
+        abzurufen.
+      </template>
+    </openwb-base-text-input>
+  </div>
+</template>
+
+<script>
+import FlexibleTariffConfigMixin from "../FlexibleTariffConfigMixin.vue";
+
+export default {
+  name: "FlexibleTariffWestfalenWind",
+  mixins: [FlexibleTariffConfigMixin],
+};
+</script>