fix : add nuget.config to fix cannot get index nuget

Author: minhsangdotcom

.github/workflows/github-cicd.yml

@@ -35,7 +35,7 @@ jobs:
             ${{ runner.os }}-nuget-
       - name: Install dependencies
         if: steps.cache-nuget.outputs.cache-hit != 'true'
-        run: dotnet restore
+        run: dotnet restore --locked-mode
       - name: Build
         run: dotnet build --configuration Release --no-restore
       - name: Test

nuget.config

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="NuGet Public" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>   
+</configuration>