tools: add asdf-hashicorp plugin

Signed-off-by: Rui Chen <rui@chenrui.dev>

README.md

@@ -303,6 +303,7 @@ For more Community Modules not listed here please see the [Terraform Module Regi
 - [AIaC](https://github.com/gofireflyio/aiac) - Artificial Intelligence Infrastructure-as-Code Generator
 - [AirIAM](https://github.com/bridgecrewio/AirIAM) - AirIAM is a tool for AWS IAM to least privilege Terraform execution framework.
 - [Argonaut](https://www.argonaut.dev/) - Deploy apps and infrastructure on your cloud in minutes. Autogenerate Terraform modules, customize configurations through PRs. Support for app deployments on Kubernetes and Lambda environments.
+- [asdf](https://github.com/asdf-community/asdf-hashicorp) - HashiCorp plugin for the [asdf](https://github.com/asdf-vm/asdf) version manager
 - [astro](https://github.com/uber/astro/) - Astro is a tool for managing multiple Terraform executions as a single command. :ghost:
 - [atlantis](https://github.com/runatlantis/atlantis) - Unified workflow for collaborating on Terraform through GitHub.
 - [atmos](https://github.com/cloudposse/atmos) - A universal tool that converts deep merged YAML to module inputs. :alien: