Add coverage

tools/telemetry/third_party/coverage/doc/_templates/px/layout.html

Index: tools/telemetry/third_party/coverage/doc/_templates/px/layout.html
diff --git a/tools/telemetry/third_party/coverage/doc/_templates/px/layout.html b/tools/telemetry/third_party/coverage/doc/_templates/px/layout.html
new file mode 100644
index 0000000000000000000000000000000000000000..01f03ee5fe0937d98c15ebf17b3e89f73ca2a324
--- /dev/null
+++ b/tools/telemetry/third_party/coverage/doc/_templates/px/layout.html
@@ -0,0 +1,17 @@
+{%- block doctype -%}
+<?xml version="1.0" encoding="utf-8" ?>
+{%- endblock %}
+
+<page title='{{ title|striptags }}' {% if "b" in release %}index='no'{% endif %}>
+{% block document -%}
+  {%- block body %} {% endblock -%}
+{%- endblock %}
+
+{%- if prev or next %}
+<p class='pmn pmnbot'>
+    {% if prev %}<span class='p'>&#xab;&#xa0;<i>Previous:</i> <a href="{{ prev.link|e }}" title="previous topic">{{ prev.title }}</a></span>{% endif %}
+    {% if next %}<span class='n'><i>Next:</i> <a href="{{ next.link|e }}" title="next topic">{{ next.title }}</a>&#xa0;&#xbb;</span>{% endif %}
+</p>
+{%- endif %}
+
+</page>