List pending Pack invitations for the current user

Example response

{
  "items": [
    {
      "invitation": {
        "invitationId": "550e8400-e29b-41d4-a716-446655440000",
        "packId": 123,
        "inviteeEmail": "user@example.com",
        "inviterUserId": 456
      },
      "pack": {
        "id": 1003,
        "exampleImages": [
          {
            "mimeType": "image/jpeg"
          }
        ],
        "agentImages": [
          {
            "mimeType": "image/jpeg"
          }
        ],
        "workspaceId": "ws-asdf",
        "categories": [
          {
            "categoryId": "aBCdEFg",
            "categoryName": "Project management",
            "categorySlug": "project-management"
          }
        ],
        "verifiedVersion": "1.0.0",
        "name": "Cool Geometry Formulas",
        "description": "This Pack allows users to calculate the surface area and volume of a few common 3D shapes, like cubes and pyramids.",
        "shortDescription": "Calculate cool geometric formulas like surface area.",
        "agentShortDescription": "Chat with a tool that can calculate cool geometric formulas like surface area.",
        "agentDescription": "Chat with a comprehensive tool that can calculate cool geometric formulas like surface area, volume, and other mathematical operations. This agent can help with complex calculations and provide detailed explanations.",
        "supportEmail": "user@email.com"
      },
      "makers": [
        {
          "name": "John Doe",
          "pictureLink": "https://cdn.coda.io/avatars/default_avatar.png",
          "loginId": "user@example.com"
        }
      ]
    }
  ]
}