Fix: multiple bugs on CLI

[1yam]

This PR fix a couple of bugs / features :

• port-forwarder should allow ports to be None (fix(port-forwarding): Ports can be None after instance deletion aleph-sdk-python#236)

• pricing commands now have a payment_type args to specify which type of payment you want pricing for instead of all

Related ClickUp, GitHub or Jira tickets : ALEPH-XXX

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.

Changes

[github-actions]

Failed to retrieve llama text: POST 502: Bad Gateway

[codecov]

Codecov Report

❌ Patch coverage is 60.00000% with 20 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.07%. Comparing base (ba223fd) to head (95ffde2).

Files with missing lines	Patch %	Lines
src/aleph_client/commands/pricing.py	60.60%	7 Missing and 6 partials ⚠️
src/aleph_client/commands/utils.py	50.00%	1 Missing and 2 partials ⚠️
src/aleph_client/commands/instance/__init__.py	66.66%	2 Missing ⚠️
...c/aleph_client/commands/instance/port_forwarder.py	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #406      +/-   ##
==========================================
- Coverage   61.23%   61.07%   -0.17%     
==========================================
  Files          20       20              
  Lines        3702     3712      +10     
  Branches      528      533       +5     
==========================================
  Hits         2267     2267              
- Misses       1162     1168       +6     
- Partials      273      277       +4     

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[nesitor]

LGTM 🚀