feat: Implement pagination logic and use with getExecutions query

packages/backend/src/helpers/pagination.ts

@@ -0,0 +1,30 @@
+import { QueryBuilder, Model } from 'objection';
+
+const paginate = async (
+  query: QueryBuilder<Model, Model[]>,
+  limit: number,
+  offset: number
+) => {
+  if (limit < 1 || limit > 100) {
+    throw new Error('Limit must be between 1 and 100');
+  }
+
+  const [records, count] = await Promise.all([
+    query.limit(limit).offset(offset),
+    query.resultSize(),
+  ]);
+
+  return {
+    pageInfo: {
+      currentPage: Math.ceil(offset / limit + 1),
+      totalPages: Math.ceil(count / limit),
+    },
+    edges: records.map((record: Model) => {
+      return {
+        node: record,
+      };
+    }),
+  };
+};
+
+export default paginate;