Add PlatformIO project setup, local libraries, and PCB Gerber files

- Add platformio.ini for ESP32 DevKit (Arduino framework, espressif32 6.10.0)
- Vendor ArduinoJson, MPU6050_tockn, SCServo, Simple_FOC, and WebSockets
  so a fresh clone builds without downloading dependencies
- Add .gitignore rules for PlatformIO/IDE build artifacts
- Add controller PCB Gerber and drill files

3.Software/libraries/ArduinoJson/extras/tests/catch/CMakeLists.txt

@@ -0,0 +1,21 @@
+# ArduinoJson - https://arduinojson.org
+# Copyright Benoit Blanchon 2014-2021
+# MIT License
+
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED OFF)
+
+add_library(catch
+	catch.hpp
+	catch.cpp
+)
+
+target_include_directories(catch
+	PUBLIC
+		${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+if(MINGW)
+	# prevent "too many sections (32837)" with MinGW
+	target_compile_options(catch PRIVATE -Wa,-mbig-obj)
+endif()

3.Software/libraries/ArduinoJson/extras/tests/catch/catch.cpp

@@ -0,0 +1,6 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright Benoit Blanchon 2014-2021
+// MIT License
+
+#define CATCH_CONFIG_MAIN
+#include "catch.hpp"