feat: 将解决方案页迁移至directus

- 将/solutions与/solutions/[slug]页现在由Directus作为CMS
- 添加solution页的composable API

app/models/mappers/solutionMapper.ts

@@ -0,0 +1,54 @@
+/**
+ * 将 Directus 返回的 Solution 数据转换为 SolutionListView 视图模型
+ *
+ * @param raw: 原始的 Solution 数据
+ * @returns 转换后的 SolutionListView 对象
+ *
+ * ---
+ *
+ * @example
+ * const view = toSolutionListView(rawSolution);
+ */
+export function toSolutionListView(raw: Solution): SolutionListView {
+  const trans = raw.translations?.[0] ?? {
+    title: '',
+    summary: '',
+  };
+
+  return {
+    id: raw.id,
+    title: trans.title,
+    summary: trans.summary,
+    solution_type: isObject<SolutionType>(raw.type)
+      ? raw.type.translations[0].name
+      : '',
+    cover: isObject<DirectusFile>(raw.cover) ? raw.cover.id : raw.cover,
+  };
+}
+
+/**
+ * 将 Directus 返回的 Solution 数据转换为 SolutionView 视图模型
+ *
+ * @param raw: 原始的 Solution 数据
+ * @returns 转换后的 SolutionView 对象
+ *
+ * ---
+ *
+ * @example
+ * const view = toSolutionView(rawSolution);
+ */
+export function toSolutionView(raw: Solution): SolutionView {
+  const trans = raw.translations?.[0] ?? {
+    title: '',
+    summary: '',
+    content: '',
+  };
+
+  return {
+    id: raw.id,
+    title: trans.title,
+    summary: trans.summary,
+    content: trans.content,
+    createAt: raw.create_at,
+  };
+}