feat: Add (pulumi) esc plugin

[fxsalazar]

Summary

Description:

• Tool repo URL: https://github.com/pulumi/esc
• Plugin repo URL: https://github.com/fxsalazar/asdf-esc

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

[jthegedus]

Thanks

[jthegedus]

I wish tooling from orgs like aws/hashi/pulumi etc had vendor prefixing or something. esc is so vague a name 🙄 Just having a whinge 😅 Thanks for contributing!