Fixed generation of DAOs for generic structs

[bumberboy]

• [x] Do only one thing
• [x] Non breaking API changes
• [x] Tested

What did this pull request do?

Allow gen to generate DAO for generic structs. This throws up an error previously

User Case Description

type User[T any] struct {
	ID        string
	CreatedAt time.Time
	UpdatedAt time.Time
	Params      T `gorm:"type:json;serializer:json"`
}

g := gen.NewGenerator(cfg)
g.ApplyBasic(User[any]{})
g.Execute()

[jinzhu]

Hi @bumberboy

Can you add some tests?