* Enable to set top_k for RouteLayer

* Add top_k unit test for RouteLayer

* Added support for setting different aggregation method for HybridRL

* Add unit test to verify that aggregation works

* Add support for setting aggregation in RouteLayer

* Fix bug where agg method not used in RL

* Add tests for agg

* Linted code

* Updated codecov file

* Change aggregation method names to lower case

---------

Co-authored-by: James Briggs <35938317+jamescalam@users.noreply.github.com>

chore: Update FastEmbed to latest

fix: README route example simplification

feat: Support openai base_url

fix: optional dependency issue

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

Co-authored-by: Ismail Ashraq <59014721+ashraq1455@users.noreply.github.com>

feat: Support for setting top_k for HybridRouteLayer

refactor: Removed trigger from RouteChoice

To avoid this:

Error: COMMIT: PRs with a single commit require the commit message to conform to the conventional commit spec.