Resolves #761.

ssl passes 46/168 tests. 108 fail due to inability to start a socket and another 14 failing with attribute errors due to missing library functions.

### Checklists

- [x] Add a [CHANGELOG](https://github.com/pyodide/pyodide/blob/main/docs/project/changelog.md) entry
- [x] Add / update tests

Add cryptography, openssl, and _ssl packages. Resolves #761.

ssl passes 46/168 tests. 108 fail due to inability to start a socket and another 14 failing with attribute errors due to missing library functions.

### Checklists

- [x] Add a [CHANGELOG](https://github.com/pyodide/pyodide/blob/main/docs/project/changelog.md) entry
- [x] Add / update tests

from pyodide_build.testing import run_in_pyodide


@run_in_pyodide(standalone=True, packages=["networkx"])
def test_networkx_basicgraph():
    import networkx as nx

    G = nx.Graph()
    G.add_nodes_from([1, 2, 3])
    G.add_edges_from([(1, 2), (1, 3)])

    assert G.number_of_nodes() == 3
    assert G.number_of_edges() == 2

from pyodide_build.testing import run_in_pyodide


@run_in_pyodide(standalone=True, packages=["networkx"])
def test_networkx_basicgraph():
    import networkx as nx

    G = nx.Graph()
    G.add_nodes_from([1, 2, 3])
    G.add_edges_from([(1, 2), (1, 3)])

    assert G.number_of_nodes() == 3
    assert G.number_of_edges() == 2
