Add Cloudflare Pages deployment command as script

.deployment/cd.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+
+echo 🔧 Install Rust
+curl https://sh.rustup.rs -sSf | sh -s -- -y
+export PATH=$PATH:/opt/buildhome/.cargo/bin
+
+echo 🚧 Install Node dependencies
+cd client/web
+npm install
+
+echo 👷 Build Graphite web client
+npm run build