Router - Wildcard host name for version overrides

[huntharo]

Motivations

• Cookies are not easily seen and can impact other tabs without the developer realizing it
• Query strings get lost on page navigations - on client-side navigations they still apply, but if a hard-nav happens the query string gets lost
• Host names persist and are visible

Acceptance Criteria

• Register * handler on CloudFront
• Register * Route53 handler
• Parse the host name in the EdgeToOrigin function and use that as the version for routing
• Evaluate options for encoding / decoding of the versions (try multi-dot, try escaping, etc.)