PR Summary

• Addition of Connect Method in MQTT TCP Client
  The TcpClient::connect method was introduced in MqttClient, which connects to MQTT servers over TCP protocol.
• Change of Struct to Alias Template in NanoTime
  In NanoTime, the UnitTickRatio struct was swapped out for a corresponding template alias. It's a design change to make code more efficient.
• Usage of Unused Macro in OneWire
  Certain OneWire methods have been modified to use SMING_UNUSED, ensuring efficient use of resources and better error prevention.
• Conditional Usage of printf_P Macro
  Depending on the system's architecture, the printf_P macro can now selectively use printf_P_stack. This makes the function more versatile across different platforms.
• Inclusion of 'unsigned' Conversion Specifier
  The m_printf call was updated to use the 'unsigned' conversion specifier to handle unsigned integers. This improves compatibility with different data types.
• Removal and Commenting Out Of Variables
  Various variables in lambda functions and AJAX/WebSockets methods have been commented out or eliminated entirely, perhaps suggesting they're no longer necessary in current implementation.
• Conditions For Checking Elapsed Ticks
  Code block for checking the elapsedTicks value now only runs if the system isn't running on a host architecture. It prevents unnecessary checks and improves performance.
• Marking Variables as Unused
  In TcpClientTest, the 'connected' variable has been marked as SMING_UNUSED. This clarifies that the variable is intentionally unused, preventing misunderstandings and potential warning messages.