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`)

TactilityCore/Source/kernel/critical/Critical.cpp

@@ -1,6 +1,7 @@
-#include "Critical.h"
-#include "CoreDefines.h"
-#include "RtosCompatTask.h"
+#include "Tactility/kernel/critical/Critical.h"
+
+#include "Tactility/CoreDefines.h"
+#include "Tactility/RtosCompatTask.h"
 
 #ifdef ESP_PLATFORM
 static portMUX_TYPE critical_mutex;

TactilityCore/Source/kernel/critical/Critical.h

@@ -1,24 +0,0 @@
-#pragma once
-
-#include <cstdint>
-
-namespace tt::kernel::critical {
-
-struct CriticalInfo {
-    uint32_t isrm;
-    bool fromIsr;
-    bool kernelRunning;
-};
-
-/** Enter a critical section
- * @return info on the status
- */
-CriticalInfo enter();
-
-/**
- * Exit a critical section
- * @param[in] info the info from when the critical section was started
- */
-void exit(CriticalInfo info);
-
-} // namespace