Add query to collect external API calls

java/ql/src/Telemetry/ExternalAPIUsages.ql

@@ -0,0 +1,21 @@
+/**
+ * @name Usage of APIs coming from external libraries
+ * @description A list of 3rd party APIs used in the codebase. Excludes test and generated code.
+ * @id java/telemetry/external-libs
+ */
+
+import java
+import ExternalAPI
+import semmle.code.java.GeneratedFiles
+
+from ExternalAPI api
+where
+  not api.getDeclaringType() instanceof TestLibrary and
+  isInterestingAPI(api)
+select api.simpleName() as API,
+  count(Call c |
+    c.getCallee() = api and
+    not c.getFile() instanceof GeneratedFile and
+    not loggingRelated(c)
+  ) as Usages, supportKind(api) as Kind, api.getReturnType() as ReturnType,
+  api.getDeclaringType().getPackage() as Package order by Usages desc