feat: upload template via API (#1842)

Allow users to upload templates via both v1 and v2 APIs. Similar to
uploading documents.

packages/trpc/server/embedding-router/create-embedding-template.ts

@@ -33,7 +33,9 @@ export const createEmbeddingTemplateRoute = procedure
       // First create the template
       const template = await createTemplate({
         userId: apiToken.userId,
-        title,
+        data: {
+          title,
+        },
         templateDocumentDataId: documentDataId,
         teamId: apiToken.teamId ?? undefined,
       });