ci: replace Travis with GitHub Actions

Sync docs/conf.py with ndn-cxx

Change-Id: I2c7106ef52a0e7c00de6767c6b59dbd3ce1dc082
diff --git a/.jenkins.d/09-cleanup.sh b/.jenkins.d/09-cleanup.sh
new file mode 100755
index 0000000..fe007ef
--- /dev/null
+++ b/.jenkins.d/09-cleanup.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -ex
+
+PROJ=ChronoSync
+
+sudo rm -fr /usr/local/include/"$PROJ"
+sudo rm -f /usr/local/lib{,64}/lib"$PROJ"*
+sudo rm -f /usr/local/lib{,64}/pkgconfig/{,lib}"$PROJ".pc