Fix missing cursor on rest api (#5841)

## Before

![image](https://github.com/twentyhq/twenty/assets/29927851/fc3bad2d-5238-4afa-b528-409fbff3902c)

## After

![image](https://github.com/twentyhq/twenty/assets/29927851/418174c1-aafb-4ea2-a936-50c03ea17764)

![image](https://github.com/twentyhq/twenty/assets/29927851/03439033-db6b-44b0-9613-f766babc1d2d)

![image](https://github.com/twentyhq/twenty/assets/29927851/f0e5e998-3c61-437d-863f-7289609d0d30)

packages/twenty-server/src/engine/core-modules/open-api/utils/__tests__/parameters.utils.spec.ts

@@ -111,7 +111,8 @@ describe('computeParameters', () => {
       expect(computeLastCursorParameters()).toEqual({
         name: 'last_cursor',
         in: 'query',
-        description: 'Returns objects starting from a specific cursor.',
+        description:
+          'Returns objects starting from a specific cursor. You can find cursors in **startCursor** and **endCursor** in **pageInfo** in response data',
         required: false,
         schema: {
           type: 'string',

packages/twenty-server/src/engine/core-modules/open-api/utils/parameters.utils.ts

@@ -99,7 +99,8 @@ export const computeLastCursorParameters = (): OpenAPIV3_1.ParameterObject => {
   return {
     name: 'last_cursor',
     in: 'query',
-    description: 'Returns objects starting from a specific cursor.',
+    description:
+      'Returns objects starting from a specific cursor. You can find cursors in **startCursor** and **endCursor** in **pageInfo** in response data',
     required: false,
     schema: {
       type: 'string',

packages/twenty-server/src/engine/core-modules/open-api/utils/responses.utils.ts

@@ -22,6 +22,17 @@ export const getFindManyResponse200 = (
                     )} with Relations`,
                   },
                 },
+                pageInfo: {
+                  type: 'object',
+                  properties: {
+                    hasNextPage: { type: 'boolean' },
+                    startCursor: { type: 'string' },
+                    endCursor: { type: 'string' },
+                  },
+                },
+                totalCount: {
+                  type: 'integer',
+                },
               },
             },
           },