Implemented TactilityKernel and DevicetreeCompiler, updated licenses & copyrights (#452)

**New features**

- Created a devicetree DTS and YAML parser in Python
- Created new modules:
  - TactilityKernel (LGPL v3.0 license)
  - Platforms/PlatformEsp32 (LGPL v3.0 license) 
  - Platforms/PlatformPosix (LGPL v3.0 license)
  - Tests/TactilityKernelTests

Most boards have a placeholder DTS file, while T-Lora Pager has a few devices attached.

**Licenses**

Clarified licenses and copyrights better.

- Add explanation about the intent behind them.
- Added explanation about licenses for past and future subprojects
- Added more details explanations with regards to the logo usage
- Copied licenses to subprojects to make it more explicit

TactilityKernel/Include/Tactility/FreeRTOS/FreeRTOS.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#ifdef ESP_PLATFORM
+#include <freertos/FreeRTOS.h>
+#else
+#include <FreeRTOS.h>
+#endif
+
+// Custom port compatibility definitins, mainly for PC compatibility
+#include "port.h"

TactilityKernel/Include/Tactility/FreeRTOS/README.md

@@ -0,0 +1,3 @@
+Compatibility include files for FreeRTOS.
+Custom FreeRTOS from ESP-IDF prefixes paths with "freertos/",
+but this isn't the normal behaviour for the regular FreeRTOS project.

TactilityKernel/Include/Tactility/FreeRTOS/event_groups.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "FreeRTOS.h"
+
+#ifdef ESP_PLATFORM
+#include <freertos/event_groups.h>
+#else
+#include <event_groups.h>
+#endif
+

TactilityKernel/Include/Tactility/FreeRTOS/port.h

@@ -0,0 +1,8 @@
+#pragma once
+
+#include "FreeRTOS.h"
+
+#ifndef ESP_PLATFORM
+#define xPortInIsrContext(x) (false)
+#define vPortAssertIfInISR()
+#endif

TactilityKernel/Include/Tactility/FreeRTOS/queue.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "FreeRTOS.h"
+
+#ifdef ESP_PLATFORM
+#include <freertos/queue.h>
+#else
+#include <queue.h>
+#endif
+

TactilityKernel/Include/Tactility/FreeRTOS/semphr.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "FreeRTOS.h"
+
+#ifdef ESP_PLATFORM
+#include <freertos/semphr.h>
+#else
+#include <semphr.h>
+#endif

TactilityKernel/Include/Tactility/FreeRTOS/task.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "FreeRTOS.h"
+
+#ifdef ESP_PLATFORM
+#include <freertos/task.h>
+#else
+#include <task.h>
+#endif
+

TactilityKernel/Include/Tactility/FreeRTOS/timers.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "FreeRTOS.h"
+
+#ifdef ESP_PLATFORM
+#include <freertos/timers.h>
+#else
+#include <timers.h>
+#endif