150: Support more cpu architectures (#184)

* Cross compile for win-x86, linux-arm, linux-arm64

* Build with actions instead

* Remove win-x86

* Preserve CURRENT_PLATFORM in dev.sh

* build.yaml

* Fix formatting. Remove piplines

* Use 4 space indent consistently

* x32 -> x86

* TEMP: Only test when platform === target runtime

Fix arm64 node externals url

* win-x86 externals

* Temporarily bench rhel

* Add RHEL6, skip L0 on arm for now

* Add stub for downloading new node externals when they are ready

* Remove RHEL6

* Package based on new runtime names

* Remove unused rhel from matrix includes

* Update release, add packages

* RID typo

* Cant cross test arm on x64 hosts

* New arch is a feature

Dont release x86 until we have an e2e test machine

* Fix version

* Get version from file to avoid exec error during package on x64 host for arm package

* Update Release Notes for 2.161.0 (#195)

* More cleanup

* Update release notes

src/Runner.Common/Util/VarUtil.cs

@@ -54,6 +54,8 @@ namespace GitHub.Runner.Common.Util
                         return "X64";
                     case Constants.Architecture.Arm:
                         return "ARM";
+                    case Constants.Architecture.Arm64:
+                        return "ARM64";
                     default:
                         throw new NotSupportedException(); // Should never reach here.
                 }