Merge pull request github#13227 from atorralba/atorralba/java/jenkins-generated-models

Java: Add autogenerated models for frameworks related to Jenkins

Author: atorralba

java/ql/lib/change-notes/2023-06-14-jenkins-autogenerated-models.md

@@ -0,0 +1,8 @@
+---
+category: minorAnalysis
+---
+* Added automatically-generated dataflow models for the following frameworks and libraries:
+  * `hudson`
+  * `jenkins`
+  * `net.sf.json`
+  * `stapler`