feat: Add support for cosmos/ics23 NonMembershipProof types

[h5law]

Objective

Add support for the "range based" non-membership proof types used in the cosmos/ics23 library.

Origin Document

cosmos/ics23 issue #152

Goals

• Add a new ProveExclusion function that can traverse the tree and looking for the key we aim to prove, once it has found a leaf it should collect the adjecent leaves and produce a proof for them.
  • Reference the JMT's implementation
• Add a function to convert SparseMerkleProof objects into the relevent ics23.CommitmentProof types
  • See: pocket/ibc/store/proofs_ics23.go

Deliverable

• SMT proof type conversion function to ics23 proof type
• Prove nonmembership in accordance with the ics23 repo

Non-goals / Non-deliverables

• Change existing proof logic

General issue deliverables

• Update any relevant README(s)
• Add or update any relevant or supporting mermaid diagrams

Testing Methodology

• Task specific tests or benchmarks: go test ...
• New tests or benchmarks: go test ...
• All tests: go test -v

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Creator: @h5law
Co-Owners: @h5law

[h5law]

This would require we index the tree, see [1] as a reference on how this works. But is currently not in focus or planned on being implemented.

[1] https://docs.aztec.network/concepts/advanced/data_structures/indexed_merkle_tree