Add packer plugins command and subcommands to interact with plugins

[azr]

❯ packer plugins -h
Usage: packer plugins <subcommand> [options] [args]
  This command groups subcommands for interacting with Packer plugins.

Related but not under the "plugins" command :

- "packer init <path>" will install all plugins required by a config.

Subcommands:
    install      Install latest Packer plugin [matching version constraint]
    installed    List all installed Packer plugins binaries
    remove       Remove Packer plugins [matching a version]
    required     List plugins required by a config

• feature
• docs
• tests

[nywilken]

Initial review looks really good. Nicely done. I left a few suggestion, and will continue with the testing code later today.

[nywilken]

This looks really good so far. I left a few more suggestions to fix a few small typos but this is otherwise good.

[ChiefGhostZero0x1]

Need to fix config setup to include other packers

[nywilken]

Looks Awesome 🚀

[azr]

Thanks !!!!

[github-actions]

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