Add get role controller. Optimize code.

src/main/kotlin/top/fatweb/api/vo/permission/RoleWithPowerVo.kt

@@ -0,0 +1,17 @@
+package top.fatweb.api.vo.permission
+
+import com.fasterxml.jackson.databind.annotation.JsonSerialize
+import com.fasterxml.jackson.databind.ser.std.ToStringSerializer
+import io.swagger.v3.oas.annotations.media.Schema
+
+@Schema(description = "角色返回参数")
+data class RoleWithPowerVo(
+    @JsonSerialize(using = ToStringSerializer::class)
+    val id: Long?,
+
+    @Schema(description = "角色名", example = "Role")
+    val name: String?,
+
+    @Schema(description = "启用", example = "true")
+    val enable: Boolean?
+)