Class inheritance

[Jason2605]

Well detailed description of the change :

This change makes it so that the superclass can be denoted by an expression rather than a single identifier. This means we can store classes within different datatypes (such as a dictionary) and use this as the value for the superclass

Example:

class Test {}

const dict = {"class": Test};

class Inherit < dict["class"] {}

This will mainly be useful when modules within the stdlib start getting built in classes, it means we don't need to fully import the class into the namespace and instead can reference through the module namespace

Example

import UnitTest;

class Test < UnitTest.UnitTest {
    // Tests here
}

Resolves:

#472

Type of change:

• New feature

Housekeeping

• Tests have been updated to reflect the changes done within this PR (if applicable).

• Documentation has been updated to reflect the changes done within this PR (if applicable).