chore(licensing): correct indication of pico plugin licenses for registry

Summary

• chore(licensing): correct indication of licenses for the cargo workspace

Many of our's workspace crates were living without explicit license field in a manifest. This commit adds them.

• chore(licensing): correct indication of pico plugin licenses for registry

Previously (03b53839), we have introduced incorrect indication of a license for a Cargo: only one of either license or license-file fields should be stated, while we added both. This commit fixes it by removing license-file field and rewrites license field with correct name for a license we use.

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• Close none
• Cherry-pick to: none
• Docs follow-up: none
• Changelog is updated