suggest add numpy to dependance of codon-jit so that it can be installed automatically

`pip install codon-jit` didn't install numpy, but `import codon` failed due to lack of numpy
```
pip install codon-jit
...
Successfully installed astunparse-1.6.3 codon-jit-0.4.6 cython-3.2.4 packaging-26.2 six-1.17.0 wheel-0.47.0

python ../test-codonjit.py
Traceback (most recent call last):
File "/par/tpy3145/../test-codonjit.py", line 1, in
import codon
File "/par/tpy3145/codonenv/lib/python3.14/site-packages/codon/__init__.py", line 7, in
from .decorator import jit, convert, execute, JITError, JITWrapper, _jit_register_fn, _jit_callback_fn, _jit
File "/par/tpy3145/codonenv/lib/python3.14/site-packages/codon/decorator.py", line 13, in
import numpy as np
ModuleNotFoundError: No module named 'numpy'
```