Explore Jetty-free implementation of resource handler

[dzikoysk]

Context

Currently, our static files api directly depends on Jetty's resource handler. It's a bit painful, because this implementation is relatively complex itself (because it works directly on Jetty's API) and it's one of the main blockers before exploring the possibility to use other http servers.

Requirements

The new implementation should:

• Be fully compatible with current static API
• Cover security related concerns to filter out malicious requests
• Do not depend on Jetty and Jakarta EE servlet's API