ci: Adds support for custom ndisplay configurations to be deployed to the launcher.meta

Use the CUSTOM_NDISPLAY_CONFIG variable in case you need a custom ndisplay config. These are always located in /home/vrdemo/configs/ndisplay.

shared.meta

@@ -14,5 +14,6 @@
 	"RUNNER_TAGS": "${CLEANED_BUILD_CI_RUNNER_TAGS}",
 	"RUNNER_VERSION": "${BUILD_CI_RUNNER_VERSION}",
 	"USER_OR_GROUPNAME": "${CI_PROJECT_NAMESPACE}",
-	"UNREAL_VERSION" : "${UNREAL_VERSION}"
+	"UNREAL_VERSION" : "${UNREAL_VERSION}",
+	"CUSTOM_NDISPLAY_CONFIG" : "${CUSTOM_NDISPLAY_CONFIG}"
 }