added MCU version log at Klippain startup

macros/miscs/startup.cfg

@@ -4,6 +4,8 @@
 [delayed_gcode KLIPPAIN_STARTUP]
 initial_duration: 1
 gcode:
+    # Dump the MCU version to the console for the Klippy log
+    _INIT_MCU_VER
 
     # Check the probe configuration and compatibility with current includes
     _INIT_CHECKPROBECONF
@@ -48,6 +50,21 @@ gcode:
     {% endif %}
 
 
+[gcode_macro _INIT_MCU_VER]
+gcode:
+    {% set parameters = namespace(output = 'Currently configured MCU(s): \n') %}
+    {% for name1 in printer %}
+        {% for name2 in printer[name1] %}
+        {% set show = ['mcu_version'] %}
+        {% if name2 is in show %}
+            {% set param = "%s: %s" % (name1, printer[name1][name2]) %}
+            {% set parameters.output = parameters.output +  param + "\n" %}
+        {% endif %}
+        {% endfor %}
+    {% endfor %}
+    {action_respond_info(parameters.output)}
+
+
 # TMC2240 extruder initialization macro to set the driver registers correctly. See Esoterical github for more informations:
 # https://github.com/Esoterical/voron_canbus/blob/main/toolhead_flashing/common_hardware/BigTreeTech%20SB2209%20and%20SB2240/SB2240%20Stepper%20Configuration%20and%20Undervoltage.md
 [gcode_macro _INIT_TMC2240]