Introduce create method code action

[gayalkuruppu]

Description

Currently we do not provide a code action for creating a method. Diagnostic - undefined method 'print' in object 'Person'(BCE2013)

Describe your problem(s)

Scenario 1:

class Person {
    private int age = 0;

    public function getAge() returns int {
        return self.age;
    }

    public function setAge(int age) {
        self.age = age;
        self.print(age);
    }
}

Scenario 2:

public class Counter {
    private int n;

    public function init(int n) {
        self.n = n;
    }
}

public function main () {
   Counter obj = new (0);
   obj.getSome();
}

Scenario 3: Creating the method In another file.

Describe your solution(s)

Create a method inside the class (or inside the object-constructor-expr for that usecase)

Related area

-> Editor

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