add aserpc

[PythonFZ]

This is a requirement for #87 supporting

uv run aserpc broker
uv run --extra mace aserpc worker mace-mpa-0
uv run --extra sevenn aserpc worker 7net-0
...

with e.g.

import aserpc
from ase.collections import g2

a = aserpc.RemoteCalculator("mace-mpa-0")
b = aserpc.RemoteCalculator("7net-0")

for atoms in g2:
    atoms.calc = a
    a_energy = atoms.get_potential_energy()
    atoms.calc = b
    b_energy = atoms.get_potential_energy()
    print(f"MACE: {a_energy:.3f} eV, 7Net: {b_energy:.3f} eV")

which now run in dedicated environments.