Add appveyor.yml for release

Author: ElderJames

appveyor.yml

@@ -0,0 +1,46 @@
+version: '{build}'
+os: Visual Studio 2022
+branches:
+  only:
+  - main
+environment:
+  BUILDING_ON_PLATFORM: win
+  BuildEnvironment: appveyor
+skip_branch_with_pr: true
+skip_commits:
+  files:
+    - LICENSE
+install:
+- ps: |
+    Invoke-WebRequest -Uri 'https://dot.net/v1/dotnet-install.ps1' -UseBasicParsing -OutFile "$env:temp\dotnet-install.ps1"
+    & $env:temp\dotnet-install.ps1 -Architecture x64 -Channel 8.0 -InstallDir "$env:ProgramFiles\dotnet"
+- git submodule update --init
+- dotnet build -c Release src/SkyApm.Transport.Protocol
+build_script:
+- ps: ./scripts/build.ps1
+artifacts:
+- path: artifacts/packages/*.nupkg
+deploy:
+- provider: NuGet
+  server: https://www.myget.org/F/skyapm-dotnet/api/v2/package
+  api_key:
+    secure: y93uJrdiEYaeVTFxeCduQSlCussOUF4UztOyhkxyZxFnIco73J/K2rdA2QShoEuh
+  skip_symbols: true
+  artifact: /artifacts\/packages\/.+\.nupkg/
+  on:
+    branch: main
+- provider: NuGet
+  server: https://www.myget.org/F/skyapm-dotnet/api/v2/package
+  api_key:
+    secure: y93uJrdiEYaeVTFxeCduQSlCussOUF4UztOyhkxyZxFnIco73J/K2rdA2QShoEuh
+  skip_symbols: true
+  artifact: /artifacts\/packages\/.+\.nupkg/
+  on:
+    appveyor_repo_tag: true
+- provider: NuGet
+  api_key:
+    secure: NIjkiW8row+eIim+zAHIfinfoWOp5oGB7eOjuctNvpDSmeepAQH0W4/xLZRKa54e
+  skip_symbols: true
+  artifact: /artifacts\/packages\/.+\.nupkg/
+  on:
+    appveyor_repo_tag: true