feat: add NebulaGraph config #1795

Job	Run time
check_clippy	3m 18s
check_docs	2m 48s
build_all_features	4m 16s
build_all_platforms (ubuntu-latest)	2m 22s
build_all_platforms (macos-latest)	1m 59s
build_default_features (ubuntu-latest)	35s
build_under_wasm	57s
build_all_platforms (windows-latest)	5m 11s
build_default_features (macos-latest)	36s
build_default_features (windows-latest)	2m 14s
check_msrv	35s
unit	4m 28s
	29m 19s

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