Rework expression resolvement for object's definitions

[JoaaoVerona]

When calling an object's definition and accessing a local variable, the variable can't be resolved. That is, because, inside InContext expression, the Context being passed by is the object's instance context, instead of the caller context.
Then, the arguments resolvement is being done within object's context instead of caller's context.
For example:

object Test {
  def test(int i) {
    println(i)
  }
}

test = new Test()
j = 2
test.test(j)

This example will fail, because there is no variable 'j' inside object's context, only in script's context.

[levkopo]

Hello! This bug can be fixed by adding an additional Context parameter in the Expression.reslove method. And in InContext you will need to call the reslove method, where the first parameter is the Context of the class, and the second is the Context of the caller of InContext. And FunctionCall should use the second Context for the arguments.

Example: https://github.com/levkopo/venusscript