Add jenkinsfile, update gitignore for submodules

.gitignore

@@ -7,4 +7,5 @@
 /.project
 /.vscode
 /shared-folder
-/shared-folder/**
+/shared-folder/**
+/src/main/c/lib

Jenkinsfile

@@ -0,0 +1,17 @@
+pipeline {
+    agent any
+    tools {
+        maven '3.9.6'
+    }
+    stages {
+        stage('Build') {
+            steps {
+                sh 'mvn --version'
+                sh 'java -version'
+                sh 'git submodule init'
+                sh 'git submodule update'
+                sh 'mvn clean generate-resources package'
+            }
+        }
+    }
+}