Makes getting set up with Beats contributions easy!

• Run make beats-quickstart. This is the last time you will run this. If you want to customize what this does, see the section Advanced.
• Open the subdirectory beats with your IDE and get started!
  • Don't forget to source .env once your IDE has the beats project open.
• Done. That's it. Have fun with Beats!

• elastic/beats will be cloned. If you want to set the clone to a fork, set BEATS_REPO_URL to your fork before running make beats-quickstart.

• Your beats repo clone, a directory below this, will now come with the proper Go setup to work, and a .env file placed in it.
• This top-level directory will host a mostly-self-contained Go install, leveraging gvm.
• You can now work in the beats folder and ignore this quickstart repo.