Update CI to woodpecker

.drone.yml

@@ -1,10 +0,0 @@
----
-kind: pipeline
-type: exec
-name: default
-
-steps:
-- name: build
-  commands:
-  - env
-  - bash ./gradlew assembleDebug

.woodpecker.yml

@@ -0,0 +1,9 @@
+pipeline:
+  build:
+    image: eclipse-temurin:11
+    commands:
+      - bash ./gradlew assembleDebug
+    environment:
+      - ANDROID_HOME=/mnt/sdk
+    volumes:
+      - /home/woodpecker/sdk:/mnt/sdk