feat(project): introduce cache layer for project_metadata (#16891)

[chlins]

Implement cache layer for project_metadata and migrate metadata.Mgr to
pkg.ProjectMetaMgr.

Signed-off-by: chlins chenyuzh@vmware.com

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Comprehensive Summary of your change

Issue being fixed

Fixes #16891

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• Well Written Title and Summary of the PR
• Label the PR as needed. "release-note/ignore-for-release, release-note/new-feature, release-note/update, release-note/enhancement, release-note/community, release-note/breaking-change, release-note/docs, release-note/infra, release-note/deprecation"
• Accepted the DCO. Commits without the DCO will delay acceptance.
• Made sure tests are passing and test coverage is added if needed.
• Considered the docs impact and opened a new docs issue or PR with docs changes if needed in website repository.

[codecov]

Codecov Report

Merging #16892 (f16cc4b) into main (5a4f6c6) will decrease coverage by 0.02%.
The diff coverage is 49.23%.

@@            Coverage Diff             @@
##             main   #16892      +/-   ##
==========================================
- Coverage   67.22%   67.19%   -0.03%     
==========================================
  Files         966      967       +1     
  Lines       80133    80193      +60     
  Branches     2548     2548              
==========================================
+ Hits        53870    53888      +18     
- Misses      22592    22622      +30     
- Partials     3671     3683      +12     

Flag	Coverage Δ
unittests	67.19% <49.23%> (-0.03%)	⬇️

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

Impacted Files	Coverage Δ
src/pkg/cached/manager.go	100.00% <ø> (ø)
src/pkg/project/metadata/manager.go	3.57% <ø> (ø)
src/server/v2.0/handler/project.go	5.93% <0.00%> (ø)
src/server/v2.0/handler/retention.go	0.00% <0.00%> (ø)
src/pkg/cached/project_metadata/redis/manager.go	42.59% <42.59%> (ø)
src/controller/project/controller.go	34.45% <100.00%> (ø)
src/controller/project/metadata/controller.go	33.33% <100.00%> (ø)
src/controller/scanner/base_controller.go	37.50% <100.00%> (ø)
src/pkg/factory.go	100.00% <100.00%> (ø)
src/lib/cache/util.go	73.68% <0.00%> (-15.79%)	⬇️
... and 5 more

[wy65701436]

lgtm