Add raw_program function

[long-long-float]

raw_program emits entire binary code. This is a example code.

@qpu
def sigmoid(asm):
    with open('sigmoid.bin', 'rb') as f:
        from ctypes import pointer, create_string_buffer
        data = f.read()
        raw_program(create_string_buffer(data, len(data)), len(data))