ISTWCMS-4487: adding libraries for styling

uw_wcms_gesso.libraries.yml

+global:
+  css:
+    theme:
+      css/styles.css: {}
+      https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.carousel.min.css: {}
+      https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/assets/owl.theme.default.min.css: {}
+  js:
+    js/component_scripts.min.js: {}
+    https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js: {}
+  dependencies:
+    - core/jquery
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