EVM - Optimized calldata indexing

[hussein-aitlahcen]

Following #1613.

• For read-only information such as the update client message (including the zkp and such), we could avoid doing ABI decoding (memory allocation and copy) and directly index the calldata via assembly. fix(ucs01): use correct ibc path prefix when bridging denoms #1726
• Revisit IBC structures to avoid dynamic string/bytes:
  • Consider removing string/bytes in favor of u256 where possible (port/channel/con ids? the path could be reconstructed where needed)