feat: add amass plugin (#713)

Co-authored-by: James Hegedus <jthegedus@hey.com>

README.md

@@ -53,6 +53,7 @@ The `asdf` core provides a [security policy](https://github.com/asdf-vm/asdf/sec
 | alias                         | [andrewthauer/asdf-alias](https://github.com/andrewthauer/asdf-alias)                                           | [![Main workflow](https://github.com/andrewthauer/asdf-alias/workflows/Build/badge.svg?branch=master)](https://github.com/andrewthauer/asdf-alias/actions)                                                                        |
 | allure                        | [comdotlinux/asdf-allure](https://github.com/comdotlinux/asdf-allure)                                           | [![Build](https://github.com/comdotlinux/asdf-allure2/actions/workflows/build.yml/badge.svg?branch=master)](https://github.com/comdotlinux/asdf-allure2/actions/workflows/build.yml)                                              |
 | alp                           | [asdf-community/asdf-alp](https://github.com/asdf-community/asdf-alp)                                           | [![Main workflow](https://github.com/asdf-community/asdf-alp/workflows/Main%20workflow/badge.svg?branch=master)](https://github.com/asdf-community/asdf-alp/actions)                                                              |
+| amass                         | [dhoeric/asdf-amass](https://github.com/dhoeric/asdf-amass)                                             | [![Build Status](https://github.com/dhoeric/asdf-amass/workflows/Build/badge.svg?branch=main)](https://github.com/dhoeric/asdf-amass/actions)                                                                             |
 | Amazon ECR Credential Helper  | [dex4er/asdf-amazon-ecr-credential-helper](https://github.com/dex4er/asdf-amazon-ecr-credential-helper)         | [![CI](https://github.com/dex4er/asdf-amazon-ecr-credential-helper/actions/workflows/ci.yml/badge.svg)](https://github.com/dex4er/asdf-amazon-ecr-credential-helper/actions/workflows/ci.yml)                                     |
 | Ansible (ansible-base)        | [amrox/asdf-pyapp](https://github.com/amrox/asdf-pyapp)                                                         | [![Build Status](https://github.com/amrox/asdf-pyapp/workflows/Build/badge.svg)](https://github.com/amrox/asdf-pyapp/actions)                                                                                                     |
 | ant                           | [jackboespflug/asdf-ant](https://github.com/jackboespflug/asdf-ant)                                             | [![Build Status](https://github.com/jackboespflug/asdf-ant/workflows/Build/badge.svg?branch=main)](https://github.com/jackboespflug/asdf-ant/actions)                                                                             |

plugins/amass

@@ -0,0 +1 @@
+repository = https://github.com/dhoeric/asdf-amass.git