[BE/#50] Feat : 레이블 관련 요청 DTO 추가

- LabelRequestDto
- create, update 요청 시 사용

BE/src/main/java/com/codesquad/issuetracker/ragdoll/dto/LabelRequestDto.java

@@ -0,0 +1,34 @@
+package com.codesquad.issuetracker.ragdoll.dto;
+
+public class LabelRequestDto {
+
+    private String labelName;
+
+    private String description;
+
+    private String hexCode;
+
+    public String getLabelName() {
+        return labelName;
+    }
+
+    public void setLabelName(String labelName) {
+        this.labelName = labelName;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public String getHexCode() {
+        return hexCode;
+    }
+
+    public void setHexCode(String hexCode) {
+        this.hexCode = hexCode;
+    }
+}