Add Scarf Pixel to Airflow RTD Theme (#1012)

Similar to apache/superset#25065 and apache/airflow#39510 but this one doesn't need to wait for the VOTE since this adds a simple transparent tracking pixel. More detail in https://docs.scarf.sh/web-traffic/

All of this data will be available in Scarf, creds for which are shared to 1password for PMC members, and can be reported periodically in things like Town Hall or newsletters.

landing-pages/site/layouts/partials/hooks/head-end.html

@@ -46,6 +46,9 @@
     })();
 </script>
 <!-- End Matomo Code -->
+<!-- Scarf Telemetry Pixel -->
+<img referrerpolicy="no-referrer-when-downgrade" src="https://static.scarf.sh/a.png?x-pxid=7265a3c4-a6dd-4933-ba8b-9e3c13903c60" />
+<!-- End Scarf Telemetry Pixel -->
 
 {{ with .Site.Data.webpack }}
 <link rel="preload" href="{{ relURL .main.js }}" as="script">

sphinx_airflow_theme/sphinx_airflow_theme/__init__.py

@@ -18,7 +18,7 @@
 from os import path
 from sphinx.application import Sphinx
 
-__version__ = '0.0.12'
+__version__ = '0.0.13'
 __version_full__ = __version__
 
 

sphinx_airflow_theme/sphinx_airflow_theme/layout.html

@@ -317,6 +317,9 @@
         })();
     </script>
     <!-- End Matomo Code -->
+    <!-- Scarf Telemetry Pixel -->
+    <img referrerpolicy="no-referrer-when-downgrade" src="https://static.scarf.sh/a.png?x-pxid=7265a3c4-a6dd-4933-ba8b-9e3c13903c60" />
+    <!-- End Scarf Telemetry Pixel -->
     {%- block extrahead %}
 
     {% endblock %}