feat(treasury): add swap functionalities through osmosis (#126)

## Overview

This PR updates the treasury and staking contracts, allowing the staking
contract to send protocol fees to the treasury and enabling a `trader`
account to perform swap operations, helping the treasury hedge against
asset price fluctuations.

To prevent the `trader` from converting the treasury's assets into
unwanted ones, a list of swap routes can be defined. This forces the
`trader` to use only a predefined set of pools and only in a predefined
direction. For example, if the Osmosis pool 1 has the OSMO/USDC pair, we
can enforce that the `trader` can only swap OSMO for USDC, but not the
other way around.

closes: MILKTIA-35

## What changes have been made in this PR?

- [ ] Add swap functionalities to the treasury contract
- [ ] Allow the staking contract to send the protocol fees to the
treasury
- [ ] Fix lint errors reported by `cargo clippy` 

## Checklist

---

- [ ] Appropriate labels applied
- [ ] Targeted PR against correct branch
- [ ] Linked to Github issue with discussion and accepted design OR link
to spec that describes this work.
- [ ] Wrote unit and integration
- [ ] Updated relevant documentation

Cargo.toml

@@ -1,5 +1,6 @@
 [workspace]
 members = ["contracts/*", "packages/*"]
+resolver = "2"
 
 [workspace.package]
 version = "0.4.19"
@@ -13,12 +14,16 @@ documentation = "https://docs.milkyway.zone/"
 keywords = ["cosmwasm", "milkyway", "cosmos"]
 
 [workspace.dependencies]
-cosmwasm-schema = "1.3.1"
-cosmwasm-std = {version = "1.4.1"}
+bech32 = "0.9.1"
+cosmwasm-schema = "1.5.2"
+cosmwasm-std = "1.5.2"
 cw2 = "1.0.1"
+cw-controllers = "1.1.2"
+cw-storage-plus = "1.1.0"
 cw-utils = "1.0.1"
-osmosis-std = "0.20.1"
+osmosis-std = "0.25.0"
 schemars = "0.8.12"
+semver = "1.0.20"
 serde = { version = "1.0.155", default-features = false, features = ["derive"] }
 thiserror = "1.0.39"
 

README.md

@@ -13,7 +13,7 @@ This repository contains MilkyWay's core contracts that is deployed and operated
 | Contract                           | Description                                             |
 | ---------------------------------- | ------------------------------------------------------- |
 | [`staking`](./contracts/staking)   | Core contract for liquid staking / liquid unstaking TIA |
-| [`treasury`](./contracts/treasury) | MilkyWay DAO                                            |
+| [`treasury`](./contracts/treasury) | MilkyWay treasury contract                                            |
 
 ## Testing
 

contracts/staking/Cargo.toml

@@ -20,25 +20,24 @@ backtraces = ["cosmwasm-std/backtraces"]
 library = []
 
 [dependencies]
-cosmwasm-schema = { workspace = true }
-cosmwasm-std = {version = "1.4.1", features = ["stargate"]}
-cw-storage-plus = "1.1.0"
-cw2 = { workspace = true }
-schemars = { workspace = true }
-serde = { workspace = true }
-serde_json = "1.0"
-thiserror = { workspace = true }
-osmosis-std = { workspace = true }
-cw-controllers = "1.1.1"
-cw-utils = { workspace = true }
-milky_way = { path = "../../packages/milky_way" }
-bech32 = "0.9.1"
-bech32-no_std = "0.7.3"
-sha2 = "0.10.8"
-prost = {version = "0.11.2", default-features = false, features = ["prost-derive"]}
+bech32.workspace = true
+cw2.workspace = true
+cosmwasm-schema.workspace = true
+cosmwasm-std = { workspace = true, features = ["stargate"]}
+cw-controllers.workspace = true
+cw-storage-plus.workspace = true
+cw-utils.workspace = true
 enum-repr = "0.2.6"
+milky_way = { path = "../../packages/milky_way" }
+osmosis-std.workspace = true
+prost = { version = "0.12.3", default-features = false, features = ["prost-derive"] }
 prost-derive = "0.12.3"
-semver = "1.0.20"
+schemars.workspace = true
+serde.workspace = true
+serde_json = "1.0"
+sha2 = "0.10.8"
+thiserror.workspace = true
+semver.workspace = true
 
 [dev-dependencies]
 cw-multi-test = "0.17.0"

contracts/staking/src/ack.rs

@@ -1,5 +1,5 @@
 use cosmwasm_schema::cw_serde;
-use cosmwasm_std::{to_binary, Binary};
+use cosmwasm_std::{to_json_binary, Binary};
 use enum_repr::EnumRepr;
 /// IBC ACK. See:
 /// https://github.com/cosmos/cosmos-sdk/blob/f999b1ff05a4db4a338a855713864497bedd4396/proto/ibc/core/channel/v1/channel.proto#L141-L147
@@ -11,12 +11,7 @@ pub enum Ack {
 
 pub fn make_ack_success() -> Binary {
     let res = Ack::Result(b"1".into());
-    to_binary(&res).unwrap()
-}
-
-pub fn make_ack_fail(err: String) -> Binary {
-    let res = Ack::Error(err);
-    to_binary(&res).unwrap()
+    to_json_binary(&res).unwrap()
 }
 
 // reply id