Various improvements (#264)

- Replace C function pointers with C++ `std::function` in `Thread`, `Timer` and `DispatcherThread`
- Rename `SystemEvent`-related functions
- WiFi: fix auto-connect when WiFi disconnects from bad signal
- WiFi: fix auto-connect when WiFi fails to auto-connect
- WiFi: implement disconnect() when tapping connected WiFi ap in WiFi management app

Tactility/Include/Tactility/app/serialconsole/ConsoleView.h

@@ -113,16 +113,6 @@ private:
         return 0;
     }
 
-    static int32_t viewThreadMainStatic(void* parameter) {
-        auto* view = (ConsoleView*)parameter;
-        return view->viewThreadMain();
-    }
-
-    static int32_t uartThreadMainStatic(void* parameter) {
-        auto* view = (ConsoleView*)parameter;
-        return view->uartThreadMain();
-    }
-
     static void onSendClickedCallback(lv_event_t* event) {
         auto* view = (ConsoleView*)lv_event_get_user_data(event);
         view->onSendClicked();
@@ -177,8 +167,9 @@ public:
         uartThread = std::make_unique<Thread>(
             "SerConsUart",
             4096,
-            uartThreadMainStatic,
-            this
+            [this]() {
+                return this->uartThreadMain();
+            }
         );
         uartThread->setPriority(tt::Thread::Priority::High);
         uartThread->start();
@@ -226,8 +217,9 @@ public:
         viewThread = std::make_unique<Thread>(
             "SerConsView",
             4096,
-            viewThreadMainStatic,
-            this
+            [this]() {
+              return this->viewThreadMain();
+            }
         );
         viewThread->setPriority(THREAD_PRIORITY_RENDER);
         viewThread->start();

Tactility/Include/Tactility/hal/gps/GpsDevice.h

@@ -57,7 +57,6 @@ private:
     GpsModel model = GpsModel::Unknown;
     State state = State::Off;
 
-    static int32_t threadMainStatic(void* parameter);
     int32_t threadMain();
 
     bool isThreadInterrupted() const;

Tactility/Include/Tactility/kernel/SystemEvents.h

@@ -29,10 +29,10 @@ typedef uint32_t SystemEventSubscription;
 
 typedef std::function<void(SystemEvent)> OnSystemEvent;
 
-void systemEventPublish(SystemEvent event);
+void publishSystemEvent(SystemEvent event);
 
-SystemEventSubscription systemEventAddListener(SystemEvent event, OnSystemEvent handler);
+SystemEventSubscription subscribeSystemEvent(SystemEvent event, OnSystemEvent handler);
 
-void systemEventRemoveListener(SystemEventSubscription subscription);
+void unsubscribeSystemEvent(SystemEventSubscription subscription);
 
 }