Update documentation and examples for clarity

Summary:
related to T13767

- Rewrite chaining of configuration functions
- Move examples not related to documentation to dev folder
- Rewrite links for clarity
- Update CMakeLists.txt to run one of the examples
- Rewrite auto reconnect and auto retry mechanism for clarity

Reviewers: ivica

Reviewed By: ivica

Subscribers: miljen, iljazovic

Differential Revision: https://repo.mireo.local/D29044

example/hello_world_over_websocket_tcp.cpp

@@ -12,7 +12,7 @@
 int main() {
 	boost::asio::io_context ioc;
 
-	// Construct the Client with ``[beastreflink boost__beast__websocket__stream websocket::stream<__TCP_SOCKET__>]`` as the underlying stream.
+	// Construct the Client with WebSocket/TCP as the underlying stream.
 	async_mqtt5::mqtt_client<
 		boost::beast::websocket::stream<boost::asio::ip::tcp::socket>
 	> client(ioc);