Clay: Add rel="noreferrer noopener" to ClayLink

[bryceosterhaus]

When someone adds the target attribute we should add rel="noreferrer noopener"

[jbalsas]

As I mentioned... this should be overridable, in case someone wants it for legit use cases.

For instance, noopener can break authentication schemes that may rely on being able to access window.opener. These are certainly slowly disappearing, but just to be safe.

[kresimir-coko]

@jbalsas something like a unsafeTarget boolean prop, defaulted to false, that will ommit rel="noreferrer noopener" from the markup.

[jbalsas]

I don't know... maybe just be careful with the implementation and make sure passing in a rel prop will override our default properly...

I don't need to be involved in the technical decision, up to you all ;)

[bryceosterhaus]

@kresimir-coko I think we could default the rel prop to be noreferrer noopener, but allow users to pass in whatever they want to override it.

Check out my PR for an idea