Add Fabric client IRC chat mod and Drone pipeline

.drone.yml

@@ -0,0 +1,18 @@
+kind: pipeline
+type: docker
+name: build
+
+trigger:
+  event:
+    - push
+    - pull_request
+
+steps:
+  - name: gradle-build
+    image: gradle:8.10.2-jdk21
+    environment:
+      GRADLE_USER_HOME: /drone/src/.gradle
+    commands:
+      - gradle --no-daemon clean build
+      - ls -la build/libs
+