Bootstrap flake-finders subdir

Adds a dedicated area for flake finder fridays show assets under
sig-release developer documentation.

Signed-off-by: hasheddan <[email protected]>

Author: hasheddan

contributors/devel/sig-release/flake-finders/README.md

@@ -0,0 +1,5 @@
+# Flake Finder Fridays
+
+Flake Finder Fridays is a monthly livestream show where we explore recent test
+failures and flakes, walk through how they were resolved, and share tips and
+tricks for troubleshooting Kubernetes CI issues.