add flag for errors from adapter in internal api

[Shivansh-yadav13]

@nodece has suggested to add a flag for getting a not-implemented error from the adapter.

I have a suggestion, add a flag for receiving all errors, meas if true we will throw errors even if it's a not-implemented error.

need a discussion on this.

Originally posted by @nodece in https://github.com/casbin/node-casbin/pull/384#discussion_r967673880

[casbin-bot]

@nodece @Zxilly @Shivansh-yadav13