feat: point third-party mode at upstream Yu9191 modules

- subscription URLs now resolve directly to upstream modules (gh-proxy
  mirror / raw), dropping project-owned module and script copies
- remove Resources/ThirdPartyProxyModules and ThirdParty/WlocScripts,
  their pbxproj references, and the contract-test module checks
- third-party save sends lon/lat/acc matching the upstream settings
  script; motion-state simulation is unavailable (upstream lacks it)
- surface the iOS 27 beta 6 gs-loc MITM limitation in the app setup and
  README (zh/en)

Resources/ThirdPartyProxyModules/wloc.stoverride

@@ -1,36 +0,0 @@
-name: Apple WLOC 定位修改
-desc: "修改 Apple 网络定位返回坐标 | 快捷指令(推荐): 设置地理位置 https://www.icloud.com/shortcuts/a82717d8fdad4e6280866fcf911173f7 清理恢复位置 https://www.icloud.com/shortcuts/f42632d406504f24a2cd163af4fe012f | 选点页面: https://wloc-pages.pages.dev/"
-author: Yu9191 Rewrite
-homepage: https://github.com/Yu9191/wloc
-icon: https://gh-proxy.org/https://raw.githubusercontent.com/Yu9191/wloc/refs/heads/main/wloc.jpg
-category: Tools
-
-http:
-  mitm:
-    - "gs-loc.apple.com"
-    - "gs-loc-cn.apple.com"
-    - "gsp-ssl.ls.apple.com"
-    - "bluedot.is.autonavi.com"
-    - "bluedot.is.autonavi.com.gds.alibabadns.com"
-  script:
-    - match: ^https?:\/\/(?:gs-loc(?:-cn)?\.apple\.com|gsp-ssl\.ls\.apple\.com|bluedot\.is\.autonavi\.com(?:\.gds\.alibabadns\.com)?)\/clls\/wloc
-      name: WLOC.Location
-      type: response
-      require-body: true
-      binary-mode: true
-      max-size: 0
-      timeout: 30
-      argument: longitude=113.94114&latitude=22.544577&accuracy=25&randomRadius=0&logLevel=info
-    - match: ^https?:\/\/gs-loc(-cn)?\.apple\.com\/wloc-settings\/save
-      name: WLOC.Settings
-      type: request
-      require-body: false
-      timeout: 10
-
-script-providers:
-  WLOC.Location:
-    url: https://gh-proxy.org/https://raw.githubusercontent.com/Yu9191/wloc/refs/heads/main/dist/wloc.js
-    interval: 86400
-  WLOC.Settings:
-    url: https://gh-proxy.org/https://raw.githubusercontent.com/Yu9191/wloc/refs/heads/main/dist/wloc-settings.js
-    interval: 86400