Getting initial numpy working

[certik]

Here is a simple example:

from numpy import empty, int32, all

def main0():
    x: i32[5] = empty(5, dtype=int32)
    x[:] = (2+3)*5
    assert all(x == 25)

main0()

or:

from numpy import empty, int32

def main0():
    x: i32[2] = empty(2, dtype=int32)
    x[0] = 3
    x[1] = 4
    assert x[0] == 3 && x[1] == 4

main0()

[certik]

Later, implement the most commonly used functionality, for example what CuPy implements: https://docs.cupy.dev/en/stable/reference/index.html

[certik]

I think this issue is fixed. See #1458 for the CuPy support.