feat: add machineClass and ssh config

run_onchange_before_01_install-packages.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+set -euo pipefail
+
+echo "Installing packages"
+echo "Updating sources..."
+sudo apt update -qq
+
+for package in zsh xsel unzip git git-extras neovim git ripgrep pipx age; do
+    if dpkg -s "$package" >/dev/null 2>&1; then
+        echo $package is already installed.
+    else
+        echo Installing $package ...
+        sudo apt install -y $package
+    fi
+done