buffer std lib

[giann]

We use string as buffer just like Lua does. This is obvious when using os or io. We need to provide an easy way to write binary data as a string.

Buffer buffer = Buffer{};

buffer.writeNumber(12, type: NumberType.u8);
buffer.writeBoolean(true);
buffer.write("hello world");

buffer.readNumber(NumberType.u8);
buffer.readBoolean();
buffer.read(11);