#11181: feat: Lotus Gateway: add allocation and claim related GET APIs to gateway

[LexLuthr]

Related Issues

Fixes #11181

Proposed Changes

Add following APIs to the Lotus gateway:

StateGetAllocationForPendingDeal(ctx context.Context, dealId abi.DealID, tsk types.TipSetKey) (*verifregtypes.Allocation, error)
StateGetAllocation(ctx context.Context, clientAddr address.Address, allocationId verifregtypes.AllocationId, tsk types.TipSetKey) (*verifregtypes.Allocation, error)
StateGetAllocations(ctx context.Context, clientAddr address.Address, tsk types.TipSetKey) (map[verifregtypes.AllocationId]verifregtypes.Allocation, error)
StateGetClaim(ctx context.Context, providerAddr address.Address, claimId verifregtypes.ClaimId, tsk types.TipSetKey) (*verifregtypes.Claim, error)
StateGetClaims(ctx context.Context, providerAddr address.Address, tsk types.TipSetKey) (map[verifregtypes.ClaimId]verifregtypes.Claim, error)

Additional Info

Checklist

Before you mark the PR ready for review, please make sure that:

• Commits have a clear commit message.
• PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
  • PR type: fix, feat, build, chore, ci, docs, perf, refactor, revert, style, test
  • area, e.g. api, chain, state, market, mempool, multisig, networking, paych, proving, sealing, wallet, deps
• New features have usage guidelines and / or documentation updates in
  • Lotus Documentation
  • Discussion Tutorials
• Tests exist for new functionality or change in behavior
• CI is green

[arajasek]

LGTM