add message snipe feature

src/main/java/cc/fascinated/bat/model/DiscordMessage.java

@@ -0,0 +1,49 @@
+package cc.fascinated.bat.model;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.data.redis.core.RedisHash;
+
+/**
+ * @author Fascinated (fascinated7)
+ */
+@AllArgsConstructor
+@Getter @Setter
+@RedisHash(value = "DiscordMessage", timeToLive = 86400) // 24 hours
+public class DiscordMessage {
+    /**
+     * The snowflake ID of the message
+     */
+    private final String id;
+
+    /**
+     * The timestamp when the message was sent
+     */
+    private final long timestamp;
+    
+    /**
+     * The snowflake ID of the channel the message was sent in
+     */
+    private final String channelId;
+    
+    /**
+     * The snowflake ID of the guild the message was sent in
+     */
+    private final String guildId;
+    
+    /**
+     * The snowflake ID of the author of the message
+     */
+    private final String authorId;
+    
+    /**
+     * The content of the message
+     */
+    private String content;
+
+    /**
+     * Whether the message was deleted
+     */
+    private boolean deleted;
+}