Changes to folder structure to allow multigroups and changed go mod name (#2105)

* Changed folder structure to allow multi group registration

* included actions.github.com directory for resources and controllers

* updated go module to actions/actions-runner-controller

* publish arc packages under actions-runner-controller

* Update charts/actions-runner-controller/docs/UPGRADING.md

Co-authored-by: Yusuke Kuoka <ykuoka@gmail.com>

controllers/actions.summerwind.net/testresourcereader.go

@@ -0,0 +1,32 @@
+package controllers
+
+import (
+	"context"
+	"errors"
+	"reflect"
+
+	kerrors "k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+)
+
+type testResourceReader struct {
+	objects map[types.NamespacedName]client.Object
+}
+
+func (r *testResourceReader) Get(_ context.Context, key client.ObjectKey, obj client.Object, _ ...client.GetOption) error {
+	nsName := types.NamespacedName{Namespace: key.Namespace, Name: key.Name}
+	ret, ok := r.objects[nsName]
+	if !ok {
+		return &kerrors.StatusError{ErrStatus: metav1.Status{Reason: metav1.StatusReasonNotFound}}
+	}
+	v := reflect.ValueOf(obj)
+	if v.Kind() != reflect.Ptr {
+		return errors.New("obj must be a pointer")
+	}
+
+	v.Elem().Set(reflect.ValueOf(ret).Elem())
+
+	return nil
+}