Add static SDK CI workflow

Author: rnro

.github/workflows/main.yml

@@ -30,3 +30,8 @@ jobs:
     with:
       name: "Example packages"
       matrix_linux_command: "./scripts/test-examples.sh"
+
+    static-sdk:
+        name: Static SDK
+        # Workaround https://github.com/nektos/act/issues/1875
+        uses: apple/swift-nio/.github/workflows/static_sdk.yml@main

.github/workflows/pull_request.yml

@@ -57,3 +57,8 @@ jobs:
             name: "Example packages"
             matrix_linux_command: "./scripts/test-examples.sh"
             matrix_linux_nightly_main_enabled: false
+
+    static-sdk:
+        name: Static SDK
+        # Workaround https://github.com/nektos/act/issues/1875
+        uses: apple/swift-nio/.github/workflows/static_sdk.yml@main