Adopt AnyObject in RoutingProvider protocol

[kried]

Description

Adds the requirement for AnyObject to RoutingProvider protocol

Implementation

RouteController keeps a reference to the protocol
var customRoutingProvider: RoutingProvider? = nil

Without AnyObject, Swift boxed values into an existential container in RouteController. With AnyObject, only reference types can implement RoutingProvider.

Xcode memory graph previously showed customRoutingProvider as self reference, although there were no retain cycles.

Before	After

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.02%. Comparing base (496bbda) to head (c29c7f5).

@@            Coverage Diff             @@
##           lts/v2    #4744      +/-   ##
==========================================
- Coverage   60.04%   60.02%   -0.03%     
==========================================
  Files         189      189              
  Lines       21326    21326              
==========================================
- Hits        12806    12800       -6     
- Misses       8520     8526       +6     

see 3 files with indirect coverage changes

[ArtemStepuk]

thank you! just for understanding - we didn't have the leak, but the memory graph showed self reference on the RerouteController?

(and now the graph is clean)