regs: Add manager object

Create a manager object that extends the manager interface overriding
the configure and monitor methods. This provides the framework for
receiving dbus method calls at the appropriate times during a system
poweron or poweroff.

Tested:
    Used `busctl` to call the configure method
    Used `busctl` to call the monitor method

Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
Change-Id: I09db5a800a09205ba182824e62bacb19b10856bd
diff --git a/phosphor-regulators/src/manager.cpp b/phosphor-regulators/src/manager.cpp
new file mode 100644
index 0000000..77c715a
--- /dev/null
+++ b/phosphor-regulators/src/manager.cpp
@@ -0,0 +1,61 @@
+/**
+ * Copyright © 2020 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "manager.hpp"
+
+#include <sdbusplus/bus.hpp>
+
+namespace phosphor
+{
+namespace power
+{
+namespace regulators
+{
+
+Manager::Manager(sdbusplus::bus::bus& bus) :
+    ManagerObject(bus, objPath, true), bus(bus)
+{
+    // TODO get property (IM keyword)
+    // call parse json function
+    // TODO subscribe to interfacesadded (IM keyword)
+    // callback would call parse json function
+
+    // Obtain dbus service name
+    bus.request_name(busName);
+}
+
+void Manager::configure()
+{
+    // TODO Configuration errors that should halt poweron,
+    // throw InternalFailure exception (or similar) to
+    // fail the call(busctl) to this method
+}
+
+void Manager::monitor(bool enable)
+{
+    if (enable)
+    {
+        // TODO Enable timer event that will do the monitoring
+    }
+    else
+    {
+        // TODO Disable/delete timer event to stop monitoring
+    }
+}
+
+} // namespace regulators
+} // namespace power
+} // namespace phosphor