List all user guide groups
[UserGuideGroup!]!
[UserGuideGroup!]!- idUnique identifier for the group
- orderOrder of the group in the list
- nameName of the group
- descriptionDescription of the group
- skillLevelUserGuideGroupSkillLevelThe skill level of the guide group
- chapters[UserGuideChapter!]!List of chapters in this group
- requiredEntitlementsBillingTierFeatureEntitlements the account must have to access every guide in this group. An empty list means the group is available to every account. The frontend can intersect this with the account's tierFeatures to decide whether the group should be gated.