feat: macos and brew install support

script/install.d/02-brew.sh

@@ -0,0 +1,19 @@
+#!/usr/bin/env bash
+
+# -----------------------------------------------------------------------------
+# Description:
+#   (macOS only) Install homebrew.
+#
+
+if [[ "$OSTYPE" == "darwin"* ]]; then
+    export NONINTERACTIVE=1
+    if ! bin_in_path brew; then
+        download_run https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh /bin/bash
+    else
+        brew update
+    fi
+
+    brew --version
+
+    unset NONINTERACTIVE
+fi