add phpstorm stub helper

Author: tillkruss

bin/phpstorm-stubs.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+set -e
+
+if [ $# -ne 1 ]; then
+  echo "Usage: $0 <version>"
+  exit 1
+fi
+
+VERSION="$1"
+
+URL="https://builds.r2.relay.so/${VERSION}/relay.stub.php"
+
+echo "Downloading ${VERSION} stubs..."
+curl -s -o "relay.stub.php" "$URL"
+
+if [[ "$OSTYPE" == "darwin"* ]]; then
+  SED="gsed"
+else
+  SED="sed"
+fi
+
+echo "Adjusting stubs..."
+
+"$SED" -i -E \
+  -e 's/^(.*\bfunction\b.*);/\1 {}/' \
+  -e 's/^(\s*)\);$/\1) {}/'\
+  -e 's/^(\s*)\): ([^;]+);$/\1): \2 {}/' \
+  -e 's/^(\s+\*) @alias (.+)$/\1 @see \2()/' \
+  -e 's/^(\s+\*) @var \$context array/\1 @example $context array/' \
+  relay.stub.php