Support publiccode.yml v1

[bfabio]

publiccode.yml 1.0 is in RC and the parser needs to handle the new
major version.

This adds v1 parsing and aligns validation with the 1.0-rc spec:

• the Italian section is dropped, so IT: is now an unknown field
• phone must follow E.164
• government is no longer a valid scope
• country codes must be uppercase ISO 3166-1 alpha-2

Draft because 1.0 is still an RC and can change, so let's not merge
until it's final.

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.07%. Comparing base (efe4783) to head (4c7b9a7).

Files with missing lines	Patch %	Lines
validators/v1.go	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #396      +/-   ##
==========================================
- Coverage   83.80%   83.07%   -0.74%     
==========================================
  Files          14       15       +1     
  Lines        1099     1087      -12     
==========================================
- Hits          921      903      -18     
- Misses        154      160       +6     
  Partials       24       24              

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