feat(cosmwasm): cosmwasm contracts

[aeryz]

• Add interpreter contract which is the actual xcvm interpreter
  instance.

• Add asset registry which stores the mapping of cw20 token instances.
  Interpreters will query this contract to get the token instance, then
  call that cw20 token instance by themselves(not through the asset
  registry).

• Add cosmwasm-contracts profile which contains the necessary options
  for cosmwasm production builds. Cosmwasm contracts should be built by
  using this profile.

• Patch serde_json_wasm. Original serde_json_wasm does not support
  (de)serialization of BTreeMap. This produces Unreachable
  instruction which makes the contract crash. However our version does
  support this.

EDIT

• We decided on accepting CosmosMsg instead of WasmMsg::Execute in the Call instruction. This way, we don't restrict users to just be able to execute contracts but do anything that cosmwasm supports. So this will be added to this PR as well.

• Support CosmosMsg in Call instruction

Signed-off-by: aeryz [email protected]

Issue

https://app.clickup.com/t/2mezh62

Description

See commit message.

Checklist

• I have updated the cargo docs to reflect changes made by this PR (if applicable)
• I have updated the book/ to reflect changes made by this PR (if applicable)

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[hussein-aitlahcen]

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