feat(seal): add languages support

[DmitriyLewen]

Description

This PR adds support for language ecosystem vulnerability tracking in the Seal Security Database integration. The implementation extends the existing OS-based vulnerability tracking (Alpine, Debian, Red Hat) to include four major language ecosystems: Maven, PyPI, npm, and Go.

Changes

• Extended newBucket() function (pkg/vulnsrc/seal/bucket.go:33):
  • Added support for Maven, PyPI, npm, and Go ecosystems
  • Implemented error handling for language-specific bucket initialization
  • Added cases for ecosystem.Maven, ecosystem.Pip, ecosystem.Npm, and ecosystem.Go
• Updated resolveBucket() function (pkg/vulnsrc/seal/seal.go:30):
  • Added parsing logic for "maven", "pypi", "npm", and "go" ecosystem identifiers
  • Updated documentation comment to reflect new supported ecosystems
• Comprehensive test coverage (pkg/vulnsrc/seal/seal_test.go:145):
  • Added test cases for all four language ecosystems
  • Created test data files for Maven (log4j-core), PyPI (requests), npm (lodash), and Go (crypto) packages
  • Validates proper vulnerability parsing, version range handling, and data source registration

Benefits

1. Broader vulnerability coverage: Extends Seal Security Database support beyond OS packages to application dependencies
2. Multi-language support: Enables vulnerability scanning for Java (Maven), Python (PyPI), JavaScript/TypeScript (npm), and Go projects
3. Consistent architecture: Reuses existing bucket pattern for language ecosystems, maintaining code consistency
4. Production-ready: Includes comprehensive test coverage with realistic vulnerability data