feat: Download app version package file from browser

[sunnywx]

No description provided.

[sunnywx]

solve #648

[codecov]

Codecov Report

Merging #652 into master will decrease coverage by <.01%.
The diff coverage is 12.5%.

@@            Coverage Diff             @@
##           master     #652      +/-   ##
==========================================
- Coverage   13.95%   13.95%   -0.01%     
==========================================
  Files         112      112              
  Lines        1841     1849       +8     
  Branches      400      401       +1     
==========================================
+ Hits          257      258       +1     
- Misses       1516     1523       +7     
  Partials       68       68

Impacted Files	Coverage Δ
src/utils/index.js	5.26% <12.5%> (+0.54%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update cad0922...f96cf8f. Read the comment docs.

[liiil825]

我觉得没必要在前端做，可以放在 node 后端里，转移为二进制格式，Content-Type 和 Content-Disposition

[sunnywx]

我觉得没必要在前端做，可以放在 node 后端里，转移为二进制格式，Content-Type 和 Content-Disposition

嗯，你可以试下