drone zip up all the web files

.drone.yml

@@ -25,6 +25,7 @@ steps:
   - GOOS=js GOARCH=wasm go build -o main.wasm ./cmd/web     
   - cp ./cmd/web/html/index.html .
   - cp "$(go env GOROOT)/misc/wasm/wasm_exec.js" .
+  - tar czvf web.tar.gz main.wasm index.wasm wasm_exec.js 
 
 - name: publish
   image: plugins/gitea-release
@@ -46,8 +47,6 @@ steps:
       - mac_test
       - linux_test
       - windows_test.exe
-      - main.wasm
-      - index.html
-      - wasm_exec.js
+      - web.tar.gz
     checksum:
       - sha1