Migrating Summary.licenseFile and Summary.licenses to AnalysisResult.licenses

[isoos]

• Deprecated classes and fields that will become obsolete.
• Added new licenses field to AnalysisResult.
• The change is an overdue migration that also cleans up a half-migration of LicenseFile.
• I've considered to use another class name instead of reusing License, but the name seems to be fit, and its migration would be too complicated. We just won't need to remove the path field, and we may add confidence classification or score later to it. (An upcoming breaking change should clean up these loose threads.)