added jenkinsfile

Jenkinsfile

@@ -0,0 +1,20 @@
+pipeline {
+    agent any
+    stages {
+        stage('Checkout') {
+            steps {
+                checkout([$class: 'MercurialSCM', source: 'https://hg.hgdump.net/page', revision: 'default'])
+            }
+        }
+        stage('Configure') {
+            steps {
+                sh 'meson setup build'
+            }
+        }
+        stage('Compile') {
+            steps {
+                sh 'meson compile -C build'
+            }
+        }
+    }
+}