SQCPPGHA-9 Extend action to support C, C++, and Objective-C projects (#161)

scripts/utils.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+check_status() {
+  exit_status=$?
+  if [ $exit_status -ne 0 ]; then
+    echo "::error::$1"
+    exit $exit_status
+  fi
+}
+
+realpath() {
+  case ${RUNNER_OS} in
+    Windows)
+      cygpath --absolute --windows "$1"
+    ;;
+    Linux)
+      readlink -f "$1"
+    ;;
+    macOS)
+      # installed by coreutils package
+      greadlink -f "$1"
+    ;;
+  esac
+}
+