Add google service root

This commit introduces the following
=> Service root for Google
=> compiler option for the Google Root of Trust specific functionalities

Tested:
curl -vvvv --insecure --user $user_pass https://${bmc}/google/v1

Desing Doc can be found here https://github.com/openbmc/docs/blob/master/designs/oem/google/root_of_trust.md

Change-Id: I941b5cab55179279d0eff18aa29df62c3f226e47
Signed-off-by: Feras Aldahlawi <faldahlawi@gmail.com>
diff --git a/meson.build b/meson.build
index bdc514b..f6a66f1 100644
--- a/meson.build
+++ b/meson.build
@@ -61,6 +61,7 @@
 'insecure-disable-ssl'            : '-DBMCWEB_INSECURE_DISABLE_SSL',
 'host-serial-socket'              : '-DBMCWEB_ENABLE_HOST_SERIAL_WEBSOCKET',
 'ibm-management-console'          : '-DBMCWEB_ENABLE_IBM_MANAGEMENT_CONSOLE',
+'google-api'                      : '-DBMCWEB_ENABLE_GOOGLE_API',
 'kvm'                             : '-DBMCWEB_ENABLE_KVM' ,
 'basic-auth'                      : '-DBMCWEB_ENABLE_BASIC_AUTHENTICATION',
 'session-auth'                    : '-DBMCWEB_ENABLE_SESSION_AUTHENTICATION',