Added jenkinsfile describing build and test pipeline

Jenkinsfile

@@ -0,0 +1,18 @@
+pipeline {
+  agent any
+  stages {
+    stage('build') {
+      steps {
+        sh './bootstrap.sh'
+        sh './configure --prefix=/tmp/core_build'
+        sh 'make'
+        sh 'make install'
+      }
+    }
+    stage('test') {
+      steps {
+        sh 'pytest'
+      }
+    }
+  }
+}