Prototype with single host server and no admin panel (#2)

Reviewed-on: wrenn/sandbox#2
Co-authored-by: pptx704 <rafeed@omukk.dev>
Co-committed-by: pptx704 <rafeed@omukk.dev>

envd/internal/services/cgroups/noop.go

@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: Apache-2.0
+
+package cgroups
+
+type NoopManager struct{}
+
+var _ Manager = (*NoopManager)(nil)
+
+func NewNoopManager() *NoopManager {
+	return &NoopManager{}
+}
+
+func (n NoopManager) GetFileDescriptor(ProcessType) (int, bool) {
+	return 0, false
+}
+
+func (n NoopManager) Close() error {
+	return nil
+}