add: golangci-lint prerequisite (#123)

Co-authored-by: Ian Wahbe <[email protected]>

README.md

@@ -24,7 +24,8 @@ We showcase a Pulumi-owned provider based on an upstream provider named `terrafo
 Ensure the following tools are installed and present in your `$PATH`:
 
 - [`pulumictl`](https://github.com/pulumi/pulumictl#installation)
-- [Go 1.17](https://golang.org/dl/) or 1.latest
+- [Go](https://golang.org/dl/) or 1.latest
+- [`golangci-lint`](https://golangci-lint.run/welcome/install/)
 - [NodeJS](https://nodejs.org/en/) Active or maintenance version ([Node.js Releases](https://nodejs.org/en/about/previous-releases)).  We recommend using [nvm](https://github.com/nvm-sh/nvm) to manage NodeJS installations.
 - [Yarn](https://yarnpkg.com/)
 - [TypeScript](https://www.typescriptlang.org/)