feat: support map as parameter

[abichinger]

related: casbin/casbin#1328

expression, err := NewEvaluableExpression("foo.bar > 0")

parameters := make(map[string]interface{})
parameters["foo"] = map[string]int{
    "bar": -1,
}

result, err := expression.Evaluate(parameters)
// result is now set to "false"

[casbin-bot]

@tangyang9464 @JalinWang @imp2002 please review

[hsluoyz]

@abichinger hi, before this PR, can you first complete these two?

#2

#3

[hsluoyz]

@abichinger plz fix:

[github-actions]

🎉 This PR is included in version 1.1.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀