feat(instance): get server-type list info from PCU

[Mia-Cross]

This PR changes the source of information to display for the scw instance server-type list command from the Instance API to the PCU. This will harmonize the pricing between the DevTools and the Console.

The command will display server types with the following statuses:

• public_beta
• preview
• general_availability
• end_of_new_features

Other changes include:

• replacing Local Volume Max Size field with Supported Storage (for human output only, both fields will be available in json output)
• adding Bandwidth field

Closes #5076

[codecov-commenter]

Codecov Report

❌ Patch coverage is 79.41176% with 21 lines in your changes missing coverage. Please review.
✅ Project coverage is 54.56%. Comparing base (e0b1670) to head (d6b7daa).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...ernal/namespaces/instance/v1/custom_server_type.go	79.20%	20 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5379   +/-   ##
=======================================
  Coverage   54.55%   54.56%           
=======================================
  Files         317      317           
  Lines       70463    70500   +37     
=======================================
+ Hits        38444    38470   +26     
- Misses      30549    30559   +10     
- Partials     1470     1471    +1     

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