feat: add cacher for gorm to reduce the load of db

[gaius-qi]

Description

This pull request includes several changes to the go.mod file and the manager/database package to add caching functionality using GORM and LRU. The most important changes include adding new dependencies, implementing a cache mechanism, and integrating the cache with the database.

Dependencies Update:

• Added github.com/go-gorm/caches/v4 v4.0.5 to the go.mod file.
• Added github.com/hashicorp/golang-lru/v2 v2.0.7 to the go.mod file.
• Updated gorm.io/gorm from v1.24.6 to v1.25.0 in the go.mod file.

Cache Implementation:

• Implemented a new cacher struct in manager/database/cacher.go to use LRU for GORM caching.
• Added a new newCacher function to create a cacher instance and methods to Get, Store, and Invalidate cache entries.

Cache Integration:

• Imported github.com/go-gorm/caches/v4 in manager/database/database.go.
• Modified the New function in manager/database/database.go to initialize and use the new cache mechanism, reducing database load.

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 45 lines in your changes missing coverage. Please review.

Project coverage is 35.13%. Comparing base (4d7bdc5) to head (7dba77f).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
manager/database/cacher.go	0.00%	33 Missing ⚠️
manager/database/database.go	0.00%	12 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3734      +/-   ##
==========================================
- Coverage   35.16%   35.13%   -0.03%     
==========================================
  Files         335      336       +1     
  Lines       37807    37852      +45     
==========================================
+ Hits        13295    13301       +6     
- Misses      23680    23722      +42     
+ Partials      832      829       -3     

Flag	Coverage Δ
unittests	35.13% <0.00%> (-0.03%)	⬇️

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

Files with missing lines	Coverage Δ
manager/database/database.go	0.00% <0.00%> (ø)
manager/database/cacher.go	0.00% <0.00%> (ø)

... and 2 files with indirect coverage changes

[chlins]

lgtm