Remove the internal module from store

[cool-develope]

Context

We'd like to avoid the cometbft/protof/tendermint/crypto imports in the store module for loose coupling (without specifying the proof format). Also, there was a discussion of the wrong format with the ProofFromMap which is used in the multi store proof.

Decision

We will implement the own proof format without the store/internal module.

Reference

• Implement the GetProof considering the multi store keys #18598
• remove simple map usage for multistore roothash/proof creation #13534