feat: use grpc secure channel

[etiennearnal]

Description

Including the usage of secure channels upon Speos client.
Secure channel creation is based on cyberchannel.
[breaking change] Speos constructor parameters host and port are removed. Please consider to create the grpc.Channel using default_local_channel:

# Create default channel (to use when server was started with `SpeosRPC_Server.exe`)
Speos(channel=default_local_channel())
# Create channel with custom port and message size (to use when server was started with `SpeosRPC_Server.exe --port 53123`)
Speos(channel=default_local_channel(port=53123, message_size=20000000))
# Create insecure channel (to use when server was started with `SpeosRPC_Server.exe --transport-insecure`)
transport = TransportOptions(
    mode=TransportMode.INSECURE,
    options=InsecureOptions(host=host, port=port, allow_remote_host=True)
)
grpc_options = [("grpc.max_receive_message_length", message_size)]
Speos(channel=transport.create_channel(grpc_options))

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
• I have assigned this PR to myself.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: add optical property)
• I have agreed with the Contributor License Agreement (CLA).

[codecov]

Codecov Report

❌ Patch coverage is 58.73016% with 52 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.03%. Comparing base (4b67954) to head (988ec62).

Files with missing lines	Patch %	Lines
...c/ansys/speos/core/kernel/grpc/transportoptions.py	71.62%	21 Missing ⚠️
src/ansys/speos/core/kernel/client.py	35.00%	13 Missing ⚠️
src/ansys/speos/core/kernel/job.py	59.09%	9 Missing ⚠️
src/ansys/speos/core/launcher.py	10.00%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #783      +/-   ##
==========================================
- Coverage   88.99%   87.03%   -1.97%     
==========================================
  Files          39       40       +1     
  Lines        5653     5760     +107     
==========================================
- Hits         5031     5013      -18     
- Misses        622      747     +125     

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[pluAtAnsys]

this will not create local RPC server if using version before 2025.2.3. We can:
Option 1. if version <= 252, using the previous Speos method and raise security warning message
Option 2. raise error directly that this method only supports from 252.
@etiennearnal @StefanThoene @jomadec

[pluAtAnsys]

@StefanThoene let's check on this

[pluAtAnsys]

@echambla Could you please review the kernel and grpc module part.

[pluAtAnsys]

Suggested change

	speos = Speos(channel = default_docker_channel())
	speos = Speos()
	Be aware that such docker is launched via insecure channel
	By default, the ``Speos`` instance connects to ``"localhost"`` on
	port ``50098``.
	You can change this by modifying the ``host`` and ``port``
	parameters of ``default_docker_channel``, but note that you must also modify
	your ``docker run`` command by changing the ``<HOST-PORT>-50098`` argument.
	The following tabs show the commands that set the ``host`` and ``port``
	parameters of ``default_docker_channel``.
	.. code:: python
	from ansys.speos.core import Speos, default_docker_channel
	speos = Speos(channel = default_docker_channel(host="127.0.0.1", port=50098))

@etiennearnal @jomadec could you please review this? also, could we provide explanation/an example to launch docker in secure way?