src: Add publish script

Signed-off-by: Harsh Shandilya <harsh@prjkt.io>

publish.sh

@@ -0,0 +1,9 @@
+#! /usr/bin/env bash
+
+git push origin src
+git_hash=$(git rev-parse --short HEAD)
+hugo
+cd public
+git add .
+git commit --signoff --gpg-sign -m "Rebuild at ${git_hash}"
+git push origin master