feat(life): add tags to life posts and feed filtering

Allow users to select tags when creating or editing life posts
Add tag tabs to the life feed for filtering posts by tag

frontend/src/views/AdminView.vue

@@ -73,7 +73,8 @@ const configTypes = computed<Array<{ key: ConfigType; label: string; supportsIte
   { key: 'item-categories', label: t('config.itemCategories') },
   { key: 'item-usages', label: t('config.itemUsages') },
   { key: 'acquisition-methods', label: t('config.acquisitionMethods') },
-  { key: 'maps', label: t('config.maps') }
+  { key: 'maps', label: t('config.maps') },
+  { key: 'life-tags', label: t('config.lifeTags') }
 ]);
 
 const activeTab = ref<AdminTab>('config');