Feature: Added the "composite-field" tag to mapping composite fields

Version 0.7.13

• Feature: Added the "composite-field" tag to continue expanding and searching for corresponding field mappings when encountering composite fields in a Struct. Currently, only one level of expansion is supported.
• Tips: Thanks to @naeemaei for issue #39
• For my birthday!
• you can use like this:

  // Base model
  type BaseModel struct {
      Id    int `json:"id"`
  }
  
  // Country model
  type Country struct {
      BaseModel `json:"composite-field"`
      Name      string `json:"name"`
  }

• 2023-04-15 19:00 in ShangHai