OSV vulnerabilities sync and ingest on fleet server POC

[ksykulev]

Related issue: Resolves #40201

Checklist for submitter

If some of the following don't apply, delete the relevant line.

• Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
  See Changes files for more information.

• Input data is properly validated, SELECT * is avoided, SQL injection is prevented (using placeholders for values in statements), JS inline code is prevented especially for url redirects

• If paths of existing endpoints are modified without backwards compatibility, checked the frontend/CLI for any necessary changes

Testing

• Added/updated automated tests

• Where appropriate, automated tests simulate multiple hosts and test for host isolation (updates to one hosts's records do not affect another)

• QA'd all new/changed functionality manually

For unreleased bug fixes in a release candidate, one of:

• Confirmed that the fix is not expected to adversely impact load test results
• Alerted the release DRI if additional load testing is needed

Database migrations

• Checked schema for all modified table for columns that will auto-update timestamps during migration.
• Confirmed that updating the timestamps is acceptable, and will not cause unwanted side effects.
• Ensured the correct collation is explicitly set for character columns (COLLATE utf8mb4_unicode_ci).

New Fleet configuration settings

• Setting(s) is/are explicitly excluded from GitOps

If you didn't check the box above, follow this checklist for GitOps-enabled settings:

• Verified that the setting is exported via fleetctl generate-gitops
• Verified the setting is documented in a separate PR to the GitOps documentation
• Verified that the setting is cleared on the server if it is not supplied in a YAML file (or that it is documented as being optional)
• Verified that any relevant UI is disabled when GitOps mode is enabled

fleetd/orbit/Fleet Desktop

• Verified compatibility with the latest released version of Fleet (see Must rule)
• If the change applies to only one platform, confirmed that runtime.GOOS is used as needed to isolate changes
• Verified that fleetd runs on macOS, Linux and Windows
• Verified auto-update works from the released version of component to the new version (see tools/tuf/test)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 170 lines in your changes missing coverage. Please review.
✅ Project coverage is 65.57%. Comparing base (3a032b5) to head (c3c0c1e).
⚠️ Report is 1224 commits behind head on main.

Files with missing lines	Patch %	Lines
server/vulnerabilities/osv/analyzer.go	0.00%	164 Missing ⚠️
server/config/config.go	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #41589      +/-   ##
==========================================
- Coverage   66.28%   65.57%   -0.72%     
==========================================
  Files        2466     2286     -180     
  Lines      197425   181519   -15906     
  Branches     8712     8712              
==========================================
- Hits       130860   119022   -11838     
+ Misses      54730    51196    -3534     
+ Partials    11835    11301     -534     

Flag	Coverage Δ
backend	67.52% <0.00%> (-0.65%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[ksykulev]

Implemented here: #42063