New: Add vue/name-property-required rule

[lbennett-stacki]

Require that a name property is set.

Originally wanted to handle name value being an Identifier but I'm not sure its worth the hassle as I've only ever written Literal name values and I can't think of any critical case that would require an Identifier value type. Please let me know if this is a bad assumption.

Also let me know if you'd prefer just to check that the property key exists and not that the value is also a truthy Literal, understandable.

[lbennett-stacki]

I'm not sure why the netlify builds failed because there is no error message but non-zero exit code 🤷‍♂️

[lbennett-stacki]

mic tap

[ota-meshi]

Thank you for this PR!

I think it's better to change the name of the lint rule to require-name-property for consistency with other rule names.
What do you think?

Also, could you add documentation like the following file?
https://github.com/vuejs/eslint-plugin-vue/blob/master/docs/rules/require-default-prop.md

[ota-meshi]

Thank you for changing this PR! LGTM!

[lbennett-stacki]

Thanks @ota-meshi! Looks like we cant merge because of the broken circleci build. Do we need a hand fixing that or can we force merge and ignore?

[ota-meshi]

@LukeeeeBennett Hello!
npm install failed because the data cached in circleci is broken. It's not your fault.

[vue-bot]

Hey @LukeeeeBennett, thank you for your time and effort spent on this PR, contributions like yours help make Vue better for everyone. Cheers! 💚