ci: add build workflow

Fixes ATL-1641

.github/workflows/build.yml

@@ -0,0 +1,20 @@
+---
+name: Build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint:
+    name: build
+    runs-on: macos-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v3
+
+      - name: Build
+        run: "swift build"

Package.swift

@@ -1,4 +1,4 @@
-// swift-tools-version: 5.6
+// swift-tools-version: 5.5
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription