### What this PR does / why we need it? Add developer guide for using lm-eval ### Does this PR introduce _any_ user-facing change? no ### How was this patch tested? test manually --------- Signed-off-by: hfadzxy <starmoon_zhang@163.com> Signed-off-by: Yikun Jiang <yikunkero@gmail.com> Co-authored-by: Yikun Jiang <yikunkero@gmail.com>