Add static SDK CI workflow (#355)

Add static SDK CI workflow which runs on commits to PRs, merges to main
and daily on main.

Author: rnro

.github/workflows/main.yml

@@ -27,6 +27,11 @@ jobs:
     name: Cxx interop
     uses: apple/swift-nio/.github/workflows/cxx_interop.yml@main
 
+  static-sdk:
+    name: Static SDK
+    # Workaround https://github.com/nektos/act/issues/1875
+    uses: apple/swift-nio/.github/workflows/static_sdk.yml@main
+
   macos-tests:
     name: macOS tests
     uses: apple/swift-nio/.github/workflows/macos_tests.yml@main

.github/workflows/pull_request.yml

@@ -31,6 +31,11 @@ jobs:
     name: Cxx interop
     uses: apple/swift-nio/.github/workflows/cxx_interop.yml@main
 
+  static-sdk:
+    name: Static SDK
+    # Workaround https://github.com/nektos/act/issues/1875
+    uses: apple/swift-nio/.github/workflows/static_sdk.yml@main
+
   macos-tests:
     name: macOS tests
     uses: apple/swift-nio/.github/workflows/macos_tests.yml@main