Move logger traits out of detail namespace into logger_traits.hpp

Summary:
related to T15252, #24
- move logger traits out of detail namespace into logger_traits.hpp to allow writers of their own loggers to verify that their implementation satisfies the LoggerType requirements
- move impl/codecs/traits to detail/traits, traits functions are now in detail namespace
- logger outputs the contents of props in debug mode

Reviewers: ivica

Reviewed By: ivica

Subscribers: iljazovic, miljen

Differential Revision: https://repo.mireo.local/D32524

test/integration/executors.cpp

@@ -34,7 +34,11 @@ using strand_type = asio::strand<asio::any_io_executor>;
 
 BOOST_AUTO_TEST_SUITE(executors)
 
-void run_test(asio::io_context& ioc, strand_type io_ex, auto bind_async_run, auto bind_async_op) {
+template <typename AsyncRunOp, typename AsyncOp>
+void run_test(
+	asio::io_context& ioc, strand_type io_ex,
+	AsyncRunOp&& bind_async_run, AsyncOp&& bind_async_op
+) {
 	using test::after;
 	using namespace std::chrono_literals;