feat: Enhance Swagger documentation with new admin and user endpoints

- Added definitions for admin authentication, media, posts, orders, and user management.
- Implemented new API paths for admin functionalities including authentication, media management, order processing, and user statistics.
- Updated existing endpoints to improve clarity and structure in the Swagger documentation.
- Introduced new response schemas for various operations to standardize API responses.

backend_v1/app/http/admin/auth.go

@@ -22,8 +22,14 @@ type TokenResponse struct {
 
 // Login
 //
-//	@Router	/admin/auth [post]
-//	@Bind	body body
+//	@Summary		管理员登录
+//	@Tags			Admin Auth
+//	@Accept			json
+//	@Produce		json
+//	@Param			body	body		AuthBody			true	"请求体"
+//	@Success		200		{object}	TokenResponse		"成功"
+//	@Router			/admin/auth [post]
+//	@Bind			body body
 func (ctl *auth) Login(ctx fiber.Ctx, body *AuthBody) (*TokenResponse, error) {
 	if body.Username == "pl.yang" && body.Password == "Xixi@0202" {
 		claim := ctl.jwt.CreateClaims(jwt.BaseClaims{