Add logic to label fans, some cleanup

app/include/fan/Fan.h

@@ -9,6 +9,10 @@ public:
   virtual void PWM(int percent) = 0;
   virtual int RPM() = 0;
 
+  virtual void Label(std::string label) = 0;
+  virtual void MinPWM(int value) = 0;
+  virtual void StartPWM(int value) = 0;
+
   virtual void FindMinPWM() = 0;
   virtual void FindStartPWM() = 0;
 };

app/include/fan/FanLabeler.h

@@ -0,0 +1,14 @@
+#ifndef FANLABELER_H_
+#define FANLABELER_H_
+
+#include <memory>
+#include <vector>
+
+#include <fan/Fan.h>
+
+class FanLabeler {
+public:
+  void RunFanLabelInteraction(std::vector<std::shared_ptr<Fan>> fans);
+};
+
+#endif // FANLABELER_H_

app/include/fan/HwmonFan.h

@@ -11,12 +11,15 @@
 class HwmonFan : public Fan {
 public:
   HwmonFan(std::shared_ptr<PWMControl> pwmControl,
-           std::shared_ptr<Sensor> rpmSensor, std::string label = "",
-           int minPWM = 0, int startPWM = 0);
+           std::shared_ptr<Sensor> rpmSensor);
 
   void PWM(int percent) override;
   int RPM() override;
 
+  void Label(std::string label) override;
+  void MinPWM(int value) override;
+  void StartPWM(int value) override;
+
   void FindMinPWM() override;
   void FindStartPWM() override;