Improve CI

- Upload artifacts as ZIP including templates
- Add status badge to README

.woodpecker.yml

@@ -16,11 +16,19 @@ pipeline:
       password:
         from_secret: auth_token
 
+  prepare-gitea-release:
+    image: alpine
+    commands:
+      - apk update; apk add zip
+      - zip -r ecodash.zip templates ecodash
+    when:
+      event: tag
+
   gitea-publish:
     image: plugins/gitea-release
     settings:
       base_url: https://gitea.massivebox.net
-      files: ecodash
+      files: ecodash.zip
       api_key:
         from_secret: auth_token
       title: ${CI_COMMIT_TAG}