Performance: Include/Use uid in the name when using performance.measure

[mjntan35]

What problem does this feature solve?

This is in regards when Vue.config.performance is set to true.
When there is multiple components of the same name, it is difficult to distinguish which component coincide to which performance information.

One simple use case is rendering components inside a v-for.

What does the proposed API look like?

Instead of just using name (Vue._name), I suggest to include the _uid to better distinguish components with the same name