feat: soroban xcall contracts

.github/workflows/stellar-build-and-test.yml

@@ -0,0 +1,43 @@
+name: Build and Test Stellar contracts
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    branches:
+      - main
+    paths:
+      - contracts/soroban/**
+      - libraries/common/rust/**
+      - .github/workflows/stellar-build-and-test.yml
+
+defaults:
+  run:
+    working-directory: contracts/soroban
+jobs:
+  Build:
+    name: Build Stellar Contracts
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+        with:
+          submodules: true
+
+      - name: Install stable toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: 1.78.0
+          target: wasm32-unknown-unknown
+          override: true
+          profile: minimal
+
+      - name: Install wasm32
+        run: |
+          rustup target add wasm32-unknown-unknown
+          cargo install --locked soroban-cli
+
+      - name: Build & Test Stellar Contracts
+        working-directory: contracts/soroban
+        run: |
+            soroban contract build

.gitignore

@@ -65,6 +65,10 @@ yarn-error.log*
 lerna-debug.log*
 .pnpm-debug.log*
 
+### Soroban ###
+.soroban
+test_snapshots
+
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
 

Cargo.toml

@@ -1,7 +1,8 @@
 [workspace]
 members = [
     "contracts/cosmwasm-vm/*",
-
+    "contracts/soroban/contracts/*",
+    "contracts/soroban/libs/*"
 ]
 
 [workspace.package]
@@ -37,6 +38,8 @@ cw-common={ git="https://github.com/icon-project/IBC-Integration.git", branch =
 cw-mock-dapp = {path="contracts/cosmwasm-vm/cw-mock-dapp"}
 cw-mock-dapp-multi = { path="contracts/cosmwasm-vm/cw-mock-dapp-multi"}
 
+soroban-sdk = "21.6.0"
+
 [profile.release]
 opt-level = 'z'
 debug = false