feat: Flamingo plugin

[log2]

Summary

Description:

• Tool repo URL: https://github.com/flux-subsystem-argo/flamingo
• Plugin repo URL: https://github.com/log2/asdf-flamingo

Checklist

• Format with scripts/format.bash
• Test locally with scripts/test_plugin.bash --file plugins/<your_new_plugin_name>
• Your plugin CI tests are green
  • Tip: use the plugin_test action from asdf-actions in your plugin CI

[log2]

Hi, is there something other I can contribute to in order to enable merging of this new plugin?

Thank you

[jthegedus]

Thanks