Integrate 08-wasm etheruem light client into e2e test

[gjermundgaraba]

Wire up the core logic for membership proofs and updating the client into the e2e tests and replace the static wasm file that is currently being used in the e2e tests.

Definition of done:

• CosmWasm contract built for PoS runs in CI (and locally as needed)
• Clean up all of programs/08-wasm-eth
• All e2e tests run successfully (in PoS mode) with the new light client
• Types properly generated for both go and rust with reasonable types and conversation schemes.
  • The goal would be to make serde_json serialization/deserialization simpler (avoid a lot of the current hex encoding/decoding impls in ethereum_utils), but keep the good type definitions currently used.
  • Look at the comments from: feat: add initial ethereum light client #150
• Fixture generation for rust tests (including a separate just recipe to regenerate)
  • Generate one fixture per test that has the data for each step, like mentioned here: feat: add initial ethereum light client #150 (comment)