One place hardcoded `http://`, the other one `https://`.

…l use localhost as domain

Fix: extracts domain from node url instead of sending url

Fix: using vmclient sessions in get_logs instead of creating new one

fix: isort issue

Fix: mypy issue

Fix: black

Fix: isort

Fix

Fix: using real path server instead of fake server for test

Fix: create playload

Else tests were breaking.

When "using bundled libsecp256k1", the setup using `/tmp/venv/bin/hatch run testing:test` fails to proceed on Python 3.12.

That library `secp256k1` has been unmaintained for more than 2 years now (0.14.0, Nov 6, 2021), and seems to not support Python 3.12.

The error in the logs:
```
File "/tmp/pip-build-env-ye8d6ort/overlay/lib/python3.12/site-packages/setuptools/_distutils/dist.py", line 862, in get_command_obj
 cmd_obj = self.command_obj[command] = klass(self)
                                                ^^^^^^^^^^^
      TypeError: 'NoneType' object is not callable
      [end of output]
```

See failing CI run:
https://github.com/aleph-im/aleph-sdk-python/actions/runs/9613634583/job/26516767722

Co-authored-by: Olivier Le Thanh Duong <[email protected]>

* Problem: A user cannot initialize an already created confidential VM.

Solution: Implement `VmConfidentialClient` class to be able to initialize and interact with confidential VMs.

* Problem: Auth was not working

Corrections:
 *  Measurement type returned was missing field needed for validation of measurements
 * Port number was not handled correctly in authentifaction
 * Adapt to new auth protocol where domain is moved to the operation field (While keeping compat with the old format)
 * Get measurement was not working since signed with the wrong method
 * inject_secret was not sending a json
 * Websocked auth was sending a twice serialized json
 * update 'vendorized' aleph-vm auth file from source

Co-authored-by: Olivier Le Thanh Duong <[email protected]>