Add workflow that checks for new swift releases

Author: fwal

.github/workflows/check_releases.sh

@@ -0,0 +1,28 @@
+#!/bin/sh
+latest_release_name=`hub api repos/apple/swift/releases/latest | jq '.name'`
+exp="[0-9\.]"
+re="Swift ([0-9\.]+)"
+if [[ $latest_release_name =~ $re ]]
+then 
+  latest_release_number=${BASH_REMATCH[1]}
+else
+  echo "No release found"
+  exit 0
+fi
+
+echo "Latest release is $latest_release_number"
+
+if grep -q $latest_release_number "./src/swift-versions.ts"
+then
+  echo "Version already added"
+  exit 0
+fi
+
+if hub issue | grep "Add Swift $latest_release_number"
+then
+  echo "Issue already created"
+  exit 0
+fi
+
+hub issue create -m "Add Swift $latest_release_number" -m "Swift $latest_release_number have been released and should be added" -a "fwal" -l "enhancement"
+echo "Issue created"

.github/workflows/check_releases.yml

@@ -0,0 +1,13 @@
+name: Detect
+
+on:
+  schedule:
+    - cron:  '0 0 * * *'
+
+jobs:
+  swift-versions:
+    name: Swift release
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: ./.github/workflows/check_releases.sh