Bazel DevSite: Add "create issue" & "view source" buttons to narrative documentation.

A future change will add the buttons to the reference docs (which is a bit more complex since there is no 1:1 relation between displayed page and source file).

PiperOrigin-RevId: 486889786
Change-Id: I2d0d1963f7c82ab7b17dbe257196e4f105fe94cb
diff --git a/site/en/tutorials/cpp-use-cases.md b/site/en/tutorials/cpp-use-cases.md
index 4feaf27..5c5acfd 100644
--- a/site/en/tutorials/cpp-use-cases.md
+++ b/site/en/tutorials/cpp-use-cases.md
@@ -3,6 +3,8 @@
 
 # Common C++ Build Use Cases
 
+{% include "_buttons.html" %}
+
 Here you will find some of the most common use cases for building C++ projects
 with Bazel. If you have not done so already, get started with building C++
 projects with Bazel by completing the tutorial