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/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>;
+	};
+};