Adding Hello Bar script (#3315)

Signed-off-by: James Hunt <10615884+thetwopct@users.noreply.github.com>
Signed-off-by: Chris Abraham <cjyabraham@gmail.com>
Co-authored-by: Chris Abraham <cjyabraham@gmail.com>

layouts/partials/head.html

@@ -30,6 +30,7 @@
 {{- template "_internal/twitter_cards.html" . -}}
 
 <script src="https://cmp.osano.com/16A0DbT9yDNIaQkvZ/c3494b1e-ff3a-436f-978d-842e9a0bed27/osano.js"></script>
+<script defer src="https://www.cncf.io/wp-content/themes/cncf-twenty-two/source/js/on-demand/hello-bar-embed.js"></script>
 
 {{ partialCached "head-css.html" . "asdf" }}
 <script