update lib change note

Author: Jami Cogswell

java/ql/lib/change-notes/2022-08-09-android-implicit-export.md

@@ -0,0 +1,8 @@
+---
+category: feature
+---
+* Added a new predicate, `requiresPermissions`, in the `AndroidComponentXmlElement` and `AndroidApplicationXmlElement` classes to detect if the element has explicitly set a value for its `android:permission` attribute. Also added `override` annotation to the pre-existing `requiresPermissions` predicate in the `AndroidProviderXmlElement` class.
+* Added a new predicate, `hasAnIntentFilterElement`, in the `AndroidComponentXmlElement` class to detect if a component contains an intent filter element.
+* Added a new predicate, `hasExportedAttribute`, in the `AndroidComponentXmlElement` class to detect if a component has an `android:exported` attribute.
+* Added a new class, `AndroidCategoryXmlElement`, to represent a category element in an Android manifest file. Also added a new predicate, `getCategoryName`, in this class to get the name of the category element.
+* Added a new predicate, `getACategoryElement`, in the `AndroidIntentFilterXmlElement` class to get a category element of an intent filter.