Recall repo maintenance history on restart

[Lyndon-Li]

Fix issue #7753, recall repo maintenance history on Velero server restart.
Refactor the code to manipulate maintenance job from backupRepository controller and use repo Manager purely as a bridge of repo operations.

[codecov]

Codecov Report

Attention: Patch coverage is 68.82845% with 149 lines in your changes missing coverage. Please review.

Project coverage is 59.31%. Comparing base (3eaa739) to head (19b1423).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/repository/maintenance/maintenance.go	70.39%	86 Missing and 12 partials ⚠️
pkg/cmd/cli/repomantenance/maintenance.go	0.00%	31 Missing ⚠️
pkg/controller/backup_repository_controller.go	90.90%	9 Missing ⚠️
pkg/cmd/server/server.go	0.00%	6 Missing ⚠️
pkg/repository/manager/manager.go	54.54%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8580      +/-   ##
==========================================
+ Coverage   59.18%   59.31%   +0.13%     
==========================================
  Files         370      370              
  Lines       39595    39715     +120     
==========================================
+ Hits        23434    23557     +123     
+ Misses      14679    14678       -1     
+ Partials     1482     1480       -2     

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