Add script for importing match schedule and logging

- Created `import-spielplan.js` to fetch and parse the match schedule from the specified URL, saving the output as JSON.
- Added `run-spielplan-import.sh` to automate the execution of the import script and log output.
- Introduced `spielplan.html` file to store the downloaded HTML content for further processing.

pages/spielplan.vue

@@ -13,6 +13,31 @@
             </p>
           </div>
           <div class="flex items-center space-x-4">
+            <div
+              v-if="seasons.length"
+              class="flex items-center space-x-2"
+            >
+              <label
+                for="season-select"
+                class="text-sm font-medium text-gray-700"
+              >
+                Saison:
+              </label>
+              <select
+                id="season-select"
+                v-model="selectedSeason"
+                class="px-3 py-2 border border-gray-300 rounded-lg focus:ring-2 focus:ring-primary-500 focus:border-primary-500 bg-white text-sm"
+                @change="loadData"
+              >
+                <option
+                  v-for="season in seasons"
+                  :key="season.slug"
+                  :value="season.slug"
+                >
+                  {{ season.label }}
+                </option>
+              </select>
+            </div>
             <button
               :disabled="isLoading" 
               class="px-4 py-2 bg-primary-600 text-white rounded-lg hover:bg-primary-700 transition-colors disabled:bg-gray-400"
@@ -217,18 +242,34 @@ const headers = ref([])
 const isLoading = ref(false)
 const error = ref(null)
 const lastUpdated = ref('')
+const seasons = ref([])
+const selectedSeason = ref('')
+
+const loadSeasons = async () => {
+  const response = await fetch('/api/spielplan/seasons')
+  const result = await response.json()
+
+  if (result.success) {
+    seasons.value = result.seasons || []
+    selectedSeason.value = result.defaultSeason || seasons.value[0]?.slug || ''
+  }
+}
 
 const loadData = async () => {
   isLoading.value = true
   error.value = null
   
   try {
-    const response = await fetch('/api/spielplan')
+    const params = new URLSearchParams()
+    if (selectedSeason.value) params.set('season', selectedSeason.value)
+    const response = await fetch(`/api/spielplan${params.toString() ? `?${params.toString()}` : ''}`)
     const result = await response.json()
     
     if (result.success) {
       spielplanData.value = result.data
       headers.value = result.headers
+      seasons.value = result.seasons?.length ? result.seasons : seasons.value
+      selectedSeason.value = result.season || selectedSeason.value
       lastUpdated.value = new Date().toLocaleString('de-DE')
     } else {
       error.value = result.message
@@ -291,7 +332,8 @@ const formatTime = (timeString) => {
   return timeString
 }
 
-onMounted(() => {
-  loadData()
+onMounted(async () => {
+  await loadSeasons()
+  await loadData()
 })
 </script>