added ci + nuget server

Jenkinsfile

@@ -0,0 +1,28 @@
+pipeline {
+  agent any
+  stages {
+    stage('Build') {
+      steps {
+        sh 'dotnet build **/Coroutine.csproj'
+      }
+    }
+
+    stage('Pack') {
+      steps {
+        sh 'find . -type f -name \\\'*.nupkg\\\' -delete'
+        sh 'dotnet pack **/Coroutine.csproj --version-suffix ${BUILD_NUMBER}'
+      }
+    }
+
+    stage('Publish') {
+      steps {
+        sh '''dotnet nuget push -s http://localhost:5000/v3/index.json $i -k $BAGET -n true
+'''
+      }
+    }
+
+  }
+  environment {
+    BAGET = 'credentials(\'3db850d0-e6b5-43d5-b607-d180f4eab676\')'
+  }
+}