Make uv and nng private and static (#323)

[broskoTT]

Issue

Original PR was #323, then the reverted one was #336

Description

libnng.so is no longer a public dependency as of this PR: #224
Additionally, given that it is only consumed here it would be advantageous to statically link it.
Why?
So we don't have to:

• Install it
• Package it in a debian
• Bundle it in a ttnn python wheel ... etc ...

Along the above lines, I don't want to run into issues like this:

Traceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 185, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "/usr/lib/python3.8/runpy.py", line [11](https://github.com/tenstorrent/tt-metal/actions/runs/11964313949/job/33356936955#step:6:12)1, in _get_module_details
    __import__(pkg_name)
  File "/home/ubuntu/actions-runner/_work/tt-metal/tt-metal/tests/end_to_end_tests/env/lib/python3.8/site-packages/ttnn/__init__.py", line 20, in <module>
    import ttnn._ttnn
ImportError: libnng.so.1: cannot open shared object file: No such file or directory

List of the changes

Build nng as static
Make it private linkage

Testing

Hoping CI is good enough

API Changes

There are no API changes in this PR.

[blozano-tt]

LGTM!