chore(ci): add script to install dev tools on macos (#5059)

* chore: add a simple script to install dev tools

* chore: use Brewfile

.gitignore

@@ -47,4 +47,5 @@ tap-output
 # Jest
 coverage
 test/fixtures/basic-swift/.build
-test/fixtures/basic-swift/Package.resolved
+test/fixtures/basic-swift/Package.resolved
+scripts/Brewfile.lock.json

CONTRIBUTING.md

@@ -4,18 +4,11 @@
 
 ## Prerequisites
 
-You will need the following software installed:
-
-- Git
-- Node.js (and bundled npm)
-  - Use whichever version is in [`.nvmrc`](./.nvmrc).
-
-Open a terminal and make sure they are available.
+To install the required development dependencies in homebrew based environments, execute the following script from the root directory.
+The only additional prerequisite is having [homebrew](https://brew.sh/) installed.
 
 ```sh
-git --version
-node --version
-npm --version
+./scripts/install-dev-dependencies.sh
 ```
 
 ## Setting up

scripts/Brewfile

@@ -0,0 +1,10 @@
+brew 'fnm'
+brew 'git'
+brew 'go'
+brew 'gitleaks'
+brew 'pre-commit'
+brew 'convco'
+brew 'python'
+brew 'gnupg'
+
+cask 'github'

scripts/install-dev-dependencies.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -exuo pipefail
+
+# requires https://brew.sh/
+brew bundle --file=$(dirname "$0")/Brewfile