[macos] Add macOS specific package

macos/.config/Brewfile

@@ -0,0 +1,15 @@
+brew "go"
+
+# K8s related
+brew "kubernetes-cli"
+brew "kubeseal"
+brew "fluxcd/tap/flux"
+
+# Hugo
+brew "hugo"
+brew "sass/sass/sass"
+
+# Other apps
+cask "ghostty"
+cask "itsycal"
+cask "rectangle"

macos/.config/shell-common/brewfile.sh

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+# Updates Homebrew installation from the Brewfile
+function update-brewfile() {
+    brew bundle check --file ~/.config/Brewfile && brew bundle --file ~/.config/Brewfile
+}