Add Private link support

[sylwiaszunejko]

Implement scylla-specific ClientRoutes feature

This feature was implemented in scylladb/scylladb#27323
Idea is to enable clients to dynamically learn address translation information from the system.client_routes table.
When this table is updated drivers get CLIENT_ROUTES_CHANGE event with scope of the change.

This PR adds ability to configure driver to read this table and events and maintain address translation mapping updated.

Pre-review checklist

• I have split my patch into logically separate commits.
• All commit messages clearly explain what they change and why.
• I added relevant tests for new features and bug fixes.
• All commits compile, pass static checks and pass test.
• PR description sums up the changes and reasons why they should be introduced.
• I have provided docstrings for the public items that I want to introduce.
• I have adjusted the documentation in ./docs/source/.
• I added appropriate Fixes: annotations to PR description.

Fixes: #692