refactor: 目标，任务，习惯都放一张表中

src/main/java/com/dota/nexus/entity/Goal.java

@@ -6,7 +6,9 @@ import lombok.EqualsAndHashCode;
 @EqualsAndHashCode(callSuper = true)
 @Data
 public class Goal extends Entity {
-    private GoalEnum status;
+    private GoalStatusEnum status;
+
+    private GoalTypeEnum type;
 
     private String name;
 

src/main/java/com/dota/nexus/entity/GoalStatusEnum.java

@@ -3,14 +3,14 @@ package com.dota.nexus.entity;
 import lombok.Getter;
 
 @Getter
-public enum GoalEnum {
+public enum GoalStatusEnum {
 	DOING("进行中"),
 	DONE("完成"),
 	CANCEL("已取消");
 
 	private final String value;
 
-	GoalEnum(String value) {
+	GoalStatusEnum(String value) {
 		this.value = value;
 	}
 }

src/main/java/com/dota/nexus/entity/GoalTypeEnum.java

@@ -0,0 +1,13 @@
+package com.dota.nexus.entity;
+
+public enum GoalTypeEnum {
+	GOAL("目标"),
+	TASK("任务"),
+	HABIT("习惯");
+
+	private String value;
+
+	GoalTypeEnum(String value) {
+		this.value = value;
+	}
+}