Move Plex to API-driven plugin and fix NoClassDefFoundError on startup

server/src/main/java/dev/plex/punishment/extra/Note.java

@@ -0,0 +1,26 @@
+package dev.plex.punishment.extra;
+
+import com.google.gson.GsonBuilder;
+import dev.morphia.annotations.Entity;
+import java.time.ZonedDateTime;
+import java.util.UUID;
+
+import dev.plex.util.adapter.ZonedDateTimeSerializer;
+import lombok.Data;
+
+@Data
+@Entity
+public class Note
+{
+    private final UUID uuid;
+    private final String note;
+    private final UUID writtenBy;
+    private final ZonedDateTime timestamp;
+
+    private int id; // This will be automatically set from addNote
+
+    public String toJSON()
+    {
+        return new GsonBuilder().registerTypeAdapter(ZonedDateTime.class, new ZonedDateTimeSerializer()).create().toJson(this);
+    }
+}