feat: add ability to create arrays with capacity for __newArray in loader

[MaxGraey]

• Usual __newArray usage

const ptr = __newArray(Array_ID, [1, 2, 3])

which allocate and fill wasm array by 1, 2, 3 values

• New __newArray usage:

const ptr = __newArray(Array_ID, 64);

or

const ptr = __newArray(Array_ID); // same as __newArray(Array_ID, 0)

which only allocate array with some capacity without filling array.

• I've read the contributing guidelines
• I've added my name and email to the NOTICE file