ci: add Jenkins pipeline

Jenkinsfile

@@ -0,0 +1,25 @@
+pipeline {
+    agent any
+
+    stages {
+        stage('Checkout') {
+            steps {
+                echo 'Checking out the development branch'
+                sh 'git log -1 --oneline'
+            }
+        }
+
+        stage('Test') {
+            steps {
+                echo 'Hello from Jenkins!'
+                sh 'ls -la'
+            }
+        }
+
+        stage('Success') {
+            steps {
+                echo 'Build completed successfully!'
+            }
+        }
+    }
+}