added nuget package build + publish (#69)

Pushes only from master and tags.

.github/workflows/build.yml

@@ -2,6 +2,7 @@ name: build
 
 on:
   push:
+    tags: '*'
     branches: [ master ]
   pull_request:
     branches: [ master ]
@@ -13,13 +14,23 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
     - name: Setup .NET
       uses: actions/setup-dotnet@v1
       with:
         dotnet-version: 5.0.x
     - name: Restore dependencies
       run: dotnet restore
     - name: Build
-      run: dotnet build --no-restore
+      run: dotnet build -c Release --no-restore
     - name: Test
-      run: dotnet test --no-build --verbosity normal
+      run: dotnet test -c Release --no-build --verbosity normal
+    - name: Pack CA.LoopControlPluginBase
+      run: dotnet pack CA.LoopControlPluginBase -c Release -o out
+    - name: Pack CA_DataUploaderLib
+      run: dotnet pack CA_DataUploaderLib -c Release -o out
+    - name: Push generated package to nuget
+      if: ${{ (github.event_name == 'push' && github.ref == 'refs/heads/master') || startsWith(github.ref, 'refs/tags') }}
+      run: dotnet nuget push out/*.nupkg -s https://api.nuget.org/v3/index.json -k ${{ secrets.CA_NUGET_PACKAGES_KEY }}
+