[Improvement] String array function improvement

Currently there is only one function, using which we get string from string array. With manged identifiers enabled it usually has name b. Here is the simplest example:

var a = [
    'log',
    'foo',
    'bar',
    'baz'
];
var b = function (c, d) {
    c = c - 0x0;
    var e = a[c];
    return e;
};
console[b('0x0')](b('0x1'), b('0x2'), b('0x3'));

I think it will be more interesting if you add more same functions and use random of them:

var a = [
    'log',
    'foo',
    'bar',
    'baz'
];
var b = function (c, d) {
    c = c - 0x0;
    var e = a[c];
    return e;
};
var c = function (c, d) { // Just define same function
    c = c - 0x0;
    var e = a[c];
    return e;
};
var d = b; // Make link to function
var e = function (c, d) { // Just define same function
    return b(c, d);
};
console[c('0x0')](b('0x1'), e('0x2'), d('0x3')); // And use random of them

Then you even can encode different strings with different algorithms - some of them just base64, some - rc4.

[sanex3339]

The question is - should I enable stringArrayWrappersCount by default? Need to compare performance with/without this option. If the runtime performance is the same - maybe I’ll enable stringArrayWrappersCount by default with a value 1 or 2

[sanex3339]

The best thing is that all main logic is described inside StringArrayTransformer class. https://github.com/javascript-obfuscator/javascript-obfuscator/blob/string-array-intermediate-calls-wrapper/src/node-transformers/string-array-transformers/StringArrayTransformer.ts