Add client side timeout logic for endpoints that support fallback URLs (#5760)

* Implemented initial HTTPRequestTimeoutManager + added first couple of tests

* Cleaned up the code and added a bunch more unit tests based on the Android test suite

* Updated doc format

* Add new files to workspace

* Added HTTPClient tests testing interaction with timeout manager

* Swiftlint fixes

* Updated comment

* Add missing file to workspace

* Fix after rebase

* Added extra HTTPClient <-> HTTPRequestTimeoutManager tests asserting on the recorded events

* Implemented PR feedback

* Fixed compile issue

* Fix compile issue

* Implemented PR feedback

* Removed deleted file reference from workspace

* Fixed test after changing reset timeout

* Make sure the default HTTPRequistTimeoutManager is using the default value from the HTTPClient

* Add a sophisticated test testing the full timeout flow against an unroutable IP for a real world scenario

* Updated timeout case name

* Fixed case where .timeoutOnMainBackendForFallbackSupportedEndpoint was also recorded for non timeouts and added tests to prevent regression

* Fixed only stubbing the HTTP response based on path, since that could be the same across hosts, resulting in flaky tests

Sources/Networking/HTTPClient/HTTPRequestPath.swift

@@ -51,6 +51,10 @@ extension HTTPRequestPath {
         return []
     }
 
+    var supportsFallbackURLs: Bool {
+        !fallbackUrls.isEmpty
+    }
+
     var fallbackRelativePath: String? {
         return nil
     }