test: set up CI

.drone.yml

@@ -0,0 +1,13 @@
+---
+kind: pipeline
+name: coopcloud.tech/xgettext-go
+steps:
+  - name: unit tests
+    image: golang:1.24
+    commands:
+      - go test -v ./...
+
+trigger:
+  action:
+    exclude:
+      - synchronized