v0.8.49

All changes from v0.8.49 to the latest commit:

(unreleased)

• Fix linux core build error. [chen08209]

• Add proxy-only traffic statistics. [chen08209]

  Update core

  Optimize more details

• Merge pull request chen08209#140 from txyyh/main. [chen08209]

  添加自建 F-Droid 仓库相关 workflow

• Rename readme fingerprint. [txyyh]

• Rename workflow deploy repo name. [txyyh]

• Add download guide to README. [txyyh]

• Add push release files to fdroid-repo. [txyyh]