feat: add install_tools.sh script for setting up development tools

Author: gmarcher

tools/install tools.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+# install_tools.sh — Install local development tools for ABPindo.
+# Requires: Python 3.12+, Node.js 22+
+
+set -euo pipefail
+
+echo "==> Installing Python tools..."
+python -m pip install --upgrade pip
+pip install python-abp adblock-decoder
+
+echo "==> Installing Node.js tools..."
+# fop-cli: Filter Orderer and Preener (Rust edition, published via npm)
+# https://github.com/ryanbr/fop-rs
+npm install -g fop-cli
+
+# dead-domains-linter: checks filter lists for dead domains
+# https://github.com/AdguardTeam/DeadDomainsLinter
+npm install -g @adguard/dead-domains-linter
+
+echo "==> All tools installed."
+echo "    Verify: fop --version && flrender --version && dead-domains-linter --version"