Align the frontend code with Casibase

[nomeguy]

The frontend code of this repo (CasWAF) is outdated. We should upgrade the whole frontend code by referring to Casibase: https://github.com/casibase/casibase and Casdoor: https://github.com/casdoor/casdoor

We can also modify Go backend code to accommodate the changes in frontend side.

[casbin-bot]

@tangyang9464 @JalinWang @imp2002