Add doc

src/main/kotlin/top/fatweb/api/entity/common/BusinessCode.kt

@@ -1,5 +1,11 @@
 package top.fatweb.api.entity.common
 
+/**
+ * Business code entity
+ *
+ * @author FatttSnake
+ * @since 1.0.0
+ */
 enum class BusinessCode(val code: Int) {
     SYSTEM(100),
     DATABASE(200)

src/main/kotlin/top/fatweb/api/entity/common/ResponseCode.kt

@@ -1,5 +1,11 @@
 package top.fatweb.api.entity.common
 
+/**
+ * Response code entity
+ *
+ * @author FatttSnake
+ * @since 1.0.0
+ */
 enum class ResponseCode(val code: Int) {
     SYSTEM_OK(BusinessCode.SYSTEM, 0),
     SYSTEM_LOGIN_SUCCESS(BusinessCode.SYSTEM, 20),

src/main/kotlin/top/fatweb/api/entity/common/ResponseResult.kt

@@ -3,6 +3,12 @@ package top.fatweb.api.entity.common
 import io.swagger.v3.oas.annotations.media.Schema
 import java.io.Serializable
 
+/**
+ * Response result entity
+ *
+ * @author FatttSnake
+ * @since 1.0.0
+ */
 class ResponseResult<T> private constructor(
     @Schema(description = "响应码", defaultValue = "200") val code: Int,