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

Devices/lilygo-tlora-pager/CMakeLists.txt

@@ -3,5 +3,5 @@ file(GLOB_RECURSE SOURCE_FILES Source/*.c*)
 idf_component_register(
     SRCS ${SOURCE_FILES}
     INCLUDE_DIRS "Source"
-    REQUIRES Tactility esp_lcd ST7796 BQ25896 BQ27220 TCA8418 DRV2605 PwmBacklight driver esp_adc
+    REQUIRES Tactility esp_lcd ST7796 BQ25896 BQ27220 TCA8418 DRV2605 PwmBacklight driver esp_adc PlatformEsp32
 )

Devices/lilygo-tlora-pager/Source/Drivers.cpp

@@ -0,0 +1,10 @@
+#include <Tactility/Driver.h>
+
+extern "C" {
+
+extern void register_device_drivers() {
+    extern Driver tlora_pager_driver;
+    driver_construct(&tlora_pager_driver);
+}
+
+}

Devices/lilygo-tlora-pager/Source/bindings/tlora_pager.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <Tactility/bindings/bindings.h>
+#include <Tactility/drivers/Root.h>
+#include <drivers/TloraPager.h>
+
+DEFINE_DEVICETREE(tlora_pager, struct RootConfig)
+
+#ifdef __cplusplus
+}
+#endif

Devices/lilygo-tlora-pager/Source/drivers/Register.cpp

@@ -0,0 +1,10 @@
+#include <Tactility/Driver.h>
+
+extern "C" {
+
+extern void register_device_drivers() {
+    extern Driver tlora_pager_driver;
+    driver_construct(&tlora_pager_driver);
+}
+
+}

Devices/lilygo-tlora-pager/Source/drivers/TloraPager.cpp

@@ -0,0 +1,27 @@
+#include "TloraPager.h"
+
+#include <Tactility/Driver.h>
+
+#include <esp_log.h>
+
+extern "C" {
+
+static int start(Device* device) {
+    return 0;
+}
+
+static int stop(Device* device) {
+    return 0;
+}
+
+Driver tlora_pager_driver = {
+    .name = "T-Lora Pager",
+    .compatible = (const char*[]) { "lilygo,tlora-pager", nullptr },
+    .start_device = start,
+    .stop_device = stop,
+    .api = nullptr,
+    .device_type = nullptr,
+    .internal = { 0 }
+};
+
+}

Devices/lilygo-tlora-pager/Source/drivers/TloraPager.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <Tactility/drivers/Root.h>
+
+#ifdef __cplusplus
+}
+#endif

Devices/lilygo-tlora-pager/devicetree.yaml

@@ -0,0 +1,4 @@
+dependencies:
+  - Platforms/PlatformEsp32
+bindings: ./
+dts: lilygo,tlora-pager.dts

Devices/lilygo-tlora-pager/lilygo,tlora-pager.dts

@@ -0,0 +1,23 @@
+/dts-v1/;
+
+#include <bindings/tlora_pager.h>
+#include <Tactility/bindings/esp32_gpio.h>
+#include <Tactility/bindings/esp32_i2c.h>
+
+/ {
+	compatible = "lilygo,tlora-pager";
+	model = "LilyGO T-Lora Pager";
+
+	gpio0 {
+		compatible = "espressif,esp32-gpio";
+		gpio-count = <49>;
+	};
+
+	i2c0 {
+		compatible = "espressif,esp32-i2c";
+		clock-frequency = <100000>;
+		pin-sda = <&gpio0 3 GPIO_ACTIVE_HIGH>;
+		pin-scl = <&gpio0 2 GPIO_ACTIVE_HIGH>;
+		port = <I2C_NUM_0>;
+	};
+};

Devices/lilygo-tlora-pager/lilygo,tlora-pager.yaml

@@ -0,0 +1,5 @@
+description: LilyGO T-Lora Pager
+
+include: ["root.yaml"]
+
+compatible: "lilygo,tlora-pager"