[CI] Add support for GitHub Actions (#250)

Author: shahmishal

.github/workflows/pull_request.yml

@@ -0,0 +1,20 @@
+name: Pull request
+
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+
+jobs:
+  tests:
+    name: Test
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+  soundness:
+    name: Soundness
+    uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
+    with:
+      license_header_check_project_name: "Swift.org"
+      license_header_check_enabled: false
+      # https://github.com/apple/swift-algorithms/issues/251
+      docs_check_enabled: false
+      # https://github.com/apple/swift-algorithms/issues/252
+      format_check_enabled: false

.spi.yml

@@ -2,4 +2,3 @@ version: 1
 builder:
   configs:
     - documentation_targets: [Algorithms]
-