refactor(comments_get): reduce interface complexity by introducing LiteDB

[qwqcode]

package comments_get

import "gorm.io/gorm"

// LiteDB is a simplified form of gorm.DB, made to make handling database tasks easier.
// LiteDB only has `Where` and `Scopes` methods, which simplifies the creation of queries.
// This simpler structure is especially helpful when writing test cases,
// as it can make the code more straightforward and easier to comprehend.
type liteDB interface {
	Where(query interface{}, args ...interface{}) liteDB
	Scopes(funcs ...func(liteDB) liteDB) liteDB
}

[codecov]

Codecov Report

Attention: Patch coverage is 36.71875% with 81 lines in your changes are missing coverage. Please review.

Project coverage is 35.96%. Comparing base (b60cb58) to head (187b534).

Files	Patch %	Lines
server/handler/comments_get/expose.go	0.00%	29 Missing ⚠️
server/handler/comments_get/utils_list.go	0.00%	27 Missing ⚠️
server/handler/comment_list.go	0.00%	22 Missing ⚠️
internal/dao/cook.go	40.00%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #800      +/-   ##
==========================================
+ Coverage   34.83%   35.96%   +1.12%     
==========================================
  Files         117      126       +9     
  Lines        4805     5016     +211     
==========================================
+ Hits         1674     1804     +130     
- Misses       3024     3104      +80     
- Partials      107      108       +1     

Flag	Coverage Δ
go	35.96% <36.71%> (+1.12%)	⬆️

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