test: add gitignore file for IntegrationTests

Author: jaissica12

.gitignore

@@ -13,4 +13,11 @@ browserstack.err
 local.log
 test/cross-browser-testing/CBT-tests-es5.js
 test/cross-browser-testing/CBT-tests.js
-coverage/
+coverage/
+
+# Integration test artifacts
+IntegrationTests/node_modules/
+
+IntegrationTests/wiremock-recordings/mappings/mapping-*-?????.json
+IntegrationTests/wiremock-recordings/__files/body-*-?????.txt
+IntegrationTests/wiremock-recordings/__files/body-*-?????.json