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/service/wifi/WifiSettingsEsp.cpp

@@ -1,13 +1,14 @@
 #ifdef ESP_PLATFORM
 
-#include "WifiGlobals.h"
-#include "WifiSettings.h"
-#include <cstring>
+#include "Tactility/service/wifi/WifiGlobals.h"
+#include "Tactility/service/wifi/WifiSettings.h"
 
-#include "nvs_flash.h"
-#include "Log.h"
-#include "crypt/Hash.h"
-#include "crypt/Crypt.h"
+#include <Tactility/Log.h>
+#include <Tactility/crypt/Hash.h>
+#include <Tactility/crypt/Crypt.h>
+
+#include <nvs_flash.h>
+#include <cstring>
 
 #define TAG "wifi_settings"
 #define TT_NVS_NAMESPACE "wifi_settings" // limited by NVS_KEY_NAME_MAX_SIZE