Pre-download and cache Node.js and PNPM on CI (#34863)

Closes #31835

Signed-off-by: Jon Koops <jonkoops@gmail.com>

.github/scripts/download-node-tooling.sh

@@ -0,0 +1,52 @@
+#!/bin/bash -e
+
+abort() {
+  echo $1
+  exit 1
+}
+
+download_file() {
+    local url=$1
+    local target=$2
+
+    echo "Downloading $(basename "$url")..."
+    mkdir -p "$(dirname "$target")"
+    curl --silent --fail --show-error --retry 3 --retry-delay 30 --output "$target" "$url"
+}
+
+node_url() {
+    local version=$1
+    local platform=$2
+    local root_url="https://nodejs.org/dist/v$version"
+
+    if [ "$platform" == "windows" ]; then
+        echo "$root_url/win-x64/node.exe"
+    elif [ "$platform" == "linux" ]; then
+        echo "$root_url/node-v$version-linux-x64.tar.gz"
+    else
+        abort "Unsupported platform: $platform"
+    fi
+}
+
+pnpm_url() {
+    local version=$1
+
+    echo "https://registry.npmjs.org/pnpm/-/pnpm-$version.tgz"
+}
+
+main() {
+    local node_version=$1
+    local pnpm_version=$2
+
+    if [ "$node_version" == "" ] || [ "$pnpm_version" == "" ]; then
+        abort "Usage: download-node-tooling.sh <NODE_VERSION> <PNPM_VERSION>"
+    fi
+
+    local target_directory=~/.m2/repository/com/github/eirslett
+
+    download_file "$(node_url "$node_version" "linux")" "$target_directory/node/$node_version/node-$node_version-linux-x64.tar.gz"
+    download_file "$(node_url "$node_version" "windows")" "$target_directory/node/$node_version/node-$node_version-win-x64.exe"
+    download_file "$(pnpm_url "$pnpm_version")" "$target_directory/pnpm/$pnpm_version/pnpm-$pnpm_version.tar.gz"
+}
+
+main "$1" "$2"