Review and implement chain operations to support SaaS tests

[JoeCap08055]

Description

The following extrinsics are not currently used by the Project Liberty SaaS Client at runtime, but are currently invoked in their E2E CI flow in order to guarantee that the functionality hasn't been broken. This list should be reviewed for support in Gateway v1.1

• createSponsoredAccountWithDelegation
• grantDelegation
• upsertPaginatedPage
• deletePaginatedPage
• claimHandle (separate from SIWF)
• stake
• createProvider (various versions; determine which are in testing flow)

Acceptance Criteria

Each of the above extrinsics should be reviewed as to the level of support needed for the SaaS CI flow to pass. For each extrinsic, one of the following actions should be taken:

• add support to Gateway
• determine support is not needed
• determine support exists, but in a different form than the existing tests expect (ie, upsertPaginatedPage is not supported directly, but is supported via various operations in graph-service)