Project restructuring (fixes macOS builds) (#198)

- Create `Include/` folder for all main projects
- Fix some issues here and there (found while moving things)
- All includes are now in `Tactility/` subfolder and must be included with that prefix. This fixes issues with clashing POSIX headers (e.g. `<semaphore.h>` versus Tactility's `Semaphore.h`)

TactilityHeadless/Source/kernel/SystemEvents.cpp

@@ -1,6 +1,8 @@
-#include "SystemEvents.h"
-#include "Mutex.h"
-#include "CoreExtraDefines.h"
+#include "Tactility/kernel/SystemEvents.h"
+
+#include <Tactility/Mutex.h>
+#include <Tactility/CoreExtraDefines.h>
+
 #include <list>
 
 #define TAG "system_event"

TactilityHeadless/Source/kernel/SystemEvents.h

@@ -1,31 +0,0 @@
-#pragma once
-
-#include <cstdint>
-
-namespace tt::kernel {
-
-enum class SystemEvent {
-    BootInitHalBegin,
-    BootInitHalEnd,
-    BootInitI2cBegin,
-    BootInitI2cEnd,
-    BootInitLvglBegin,
-    BootInitLvglEnd,
-    BootSplash,
-    /** Gained IP address */
-    NetworkConnected,
-    NetworkDisconnected,
-    /** An important system time-related event, such as NTP update or time-zone change */
-    Time,
-};
-
-/** Value 0 mean "no subscription" */
-typedef uint32_t SystemEventSubscription;
-
-typedef void (*OnSystemEvent)(SystemEvent event);
-
-void systemEventPublish(SystemEvent event);
-SystemEventSubscription systemEventAddListener(SystemEvent event, OnSystemEvent handler);
-void systemEventRemoveListener(SystemEventSubscription subscription);
-
-}