Add EnvironmentMetrics schema

Based on DSP8010_2022.2 and adds the EnvironmentMetrics schema.

Tested: built bmcweb successfully and validator passes

Signed-off-by: George Liu <liuxiwei@inspur.com>
Change-Id: I994b48c544edc22a6bf99187b536f3e51e10b052
diff --git a/redfish-core/include/schemas.hpp b/redfish-core/include/schemas.hpp
index 87459d6..e618a62 100644
--- a/redfish-core/include/schemas.hpp
+++ b/redfish-core/include/schemas.hpp
@@ -32,6 +32,7 @@
         "ComputerSystemCollection",
         "Drive",
         "DriveCollection",
+        "EnvironmentMetrics",
         "EthernetInterface",
         "EthernetInterfaceCollection",
         "Event",