Implement break handling in switch statements

[Lan2u]

Currently, the Switch Executable implementation at doesn't support break statements as part of a switch statement.

Example code

let a = "A";
let b = "B";
let c = "hi";
switch (c) {
    case 'hi':
        a = 'hi';
        break;
    case 'hi':
        b = 'hi';
        break;
}
console.log(a);
console.log(b);

The expected output is:
'hi'
'B'

Note that the code above won't work until issue #301 is also resolved.

[Lan2u]

I can do this as an extension to PR #422

[Razican]

I can do this as an extension to PR #422

Sure, go ahead!