Problem: Solana wallet couln't be used to control the VM

[olethanh]

Add Solana authentication method for the VM operator endpoint.

First version on how to implement this. It is the same method as with Ethereum using an ephemeral key, but that key is signed with Solana private key instead of Ethereum.

On the SignedPubKeyPayload a chain argument that can be either ETH or SOL so we know which chain signing method to validate against. It default to ETH as to remain backward compatible with current client implementations.

Also added a docstring on the require_jwk_authentication decorator.

Related Jira tickets : ALEPH-50

Self proofreading checklist

• The new code clear, easy to read and well commented.
• New code does not duplicate the functions of builtin or popular libraries.
• An LLM was used to review the new code and look for simplifications.
• New classes and functions contain docstrings explaining what they provide.
• All new code is covered by relevant tests.
• Documentation has been updated regarding these changes.

How to test

Not really much to test as the client part (Python/ web) is not developed yet. So you will have to rely on the tests.

Print screen / video

N/A

Notes

This add the new dependency Solathon to sign and validate the signature via a Solana wallet, it itself use the nacl.sign module (which is a binding on top of libsodium). An alternative would be to use the Solders lib which is running in rust. The API we use is quite small. So it shouldn't be much trouble to port from one to the other.

[hoh]

Looks good overall !

Small comments regarding the use of Enums and best practices for optional imports.

The dependencies pulling qrcode and pillow seem a bit overkill but well 🙄 ...

[olethanh]

Thanks for the review I will make the correction.

I can try porting using Solder if you want, should have less deps.

[codecov]

Codecov Report

Attention: Patch coverage is 83.63636% with 9 lines in your changes missing coverage. Please review.

Project coverage is 62.35%. Comparing base (de4a0ff) to head (0fb7f7b).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/aleph/vm/orchestrator/views/authentication.py	65.21%	7 Missing and 1 partial ⚠️
src/aleph/vm/utils/__init__.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #700      +/-   ##
==========================================
+ Coverage   62.18%   62.35%   +0.17%     
==========================================
  Files          69       69              
  Lines        6079     6128      +49     
  Branches      643      646       +3     
==========================================
+ Hits         3780     3821      +41     
- Misses       2147     2154       +7     
- Partials      152      153       +1     

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