Create Report and ReportManager interfaces

Both interfaces are created based on Telemetry design described in
openbmc/docs/designs/telemetry.md. Both will be implemented in
Telemetry service in openbmc/telemetry repository.
Ref:
  https://github.com/openbmc/docs/blob/master/designs/telemetry.md

Tested:
  - Successful build and verified changes in server.hpp and
    server.cpp.

Change-Id: Id6578ce1d349ee07b8a07b2d597471ba7433a6c0
Signed-off-by: Krzysztof Grobelny <krzysztof.grobelny@intel.com>
Signed-off-by: Wludzik, Jozef <jozef.wludzik@intel.com>
diff --git a/gen/xyz/openbmc_project/meson.build b/gen/xyz/openbmc_project/meson.build
index 0f50a9d..3c4750f 100644
--- a/gen/xyz/openbmc_project/meson.build
+++ b/gen/xyz/openbmc_project/meson.build
@@ -108,6 +108,7 @@
 subdir('Smbios')
 subdir('Software')
 subdir('State')
+subdir('Telemetry')
 subdir('Time')
 generated_others += custom_target(
     'xyz/openbmc_project/Time__markdown'.underscorify(),