Convert all services to extern pattern. Reduce warnings from boost sml

Software/src/services/encoder.cpp

@@ -0,0 +1,22 @@
+#include "encoder.h"
+
+// Define the global encoder instance
+AiEsp32RotaryEncoder encoder(
+    Pins::Remote::encoderA, 
+    Pins::Remote::encoderB, 
+    Pins::Remote::encoderSwitch,
+    Pins::Remote::encoderPower, 
+    Pins::Remote::encoderStepsPerNotch
+);
+
+void IRAM_ATTR readEncoderISR() { 
+    encoder.readEncoder_ISR(); 
+}
+
+void initEncoder() {
+    encoder.begin();
+    encoder.setup(readEncoderISR);
+    encoder.setBoundaries(0, 99, false);
+    encoder.setAcceleration(0);
+    encoder.disableAcceleration();
+} 

Software/src/services/stepper.cpp

@@ -0,0 +1,21 @@
+#include "stepper.h"
+
+FastAccelStepperEngine stepperEngine = FastAccelStepperEngine();
+FastAccelStepper *stepper = nullptr;
+class StrokeEngine Stroker;
+
+void initStepper() {
+    stepperEngine.init();
+    stepper = stepperEngine.stepperConnectToPin(Pins::Driver::motorStepPin);
+    if (stepper) {
+        stepper->setDirectionPin(Pins::Driver::motorDirectionPin, false);
+        stepper->setEnablePin(Pins::Driver::motorEnablePin, true);
+        stepper->setAutoEnable(false);
+    }
+
+    // disable motor briefly in case we are against a hard stop.
+    digitalWrite(Pins::Driver::motorEnablePin, HIGH);
+    delay(600);
+    digitalWrite(Pins::Driver::motorEnablePin, LOW);
+    delay(100);
+}

Software/src/services/tasks.cpp

@@ -0,0 +1,14 @@
+#include "tasks.h"
+
+namespace Tasks {
+    TaskHandle_t drawHelloTaskH = nullptr;
+    TaskHandle_t drawMenuTaskH = nullptr;
+    TaskHandle_t drawPlayControlsTaskH = nullptr;
+    TaskHandle_t drawPatternControlsTaskH = nullptr;
+    TaskHandle_t wmTaskH = nullptr;
+    TaskHandle_t drawPreflightTaskH = nullptr;
+
+    TaskHandle_t runHomingTaskH = nullptr;
+    TaskHandle_t runSimplePenetrationTaskH = nullptr;
+    TaskHandle_t runStrokeEngineTaskH = nullptr;
+}