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

Platforms/PlatformEsp32/Bindings/espressif,esp32-i2c.yaml

@@ -0,0 +1,12 @@
+description: ESP32 I2C Controller
+
+include: ["i2c-controller.yaml"]
+
+compatible: "espressif,esp32-i2c"
+
+properties:
+  port:
+    type: int
+    description: |
+      The port number, defined by i2c_port_t.
+      Depending on the hardware, these values are available: I2C_NUM_0, I2C_NUM_1, LP_I2C_NUM_0