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/scripts/publish-particle-library.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+
+set -eu
+
+SOURCE_DIR="$(dirname "$0")/../.."
+WORK_DIR=$(mktemp -d)
+trap 'rm -rf "$WORK_DIR"' EXIT
+
+cp "$SOURCE_DIR/README.md" "$WORK_DIR/README.md"
+cp "$SOURCE_DIR/CHANGELOG.md" "$WORK_DIR/CHANGELOG.md"
+cp "$SOURCE_DIR/library.properties" "$WORK_DIR/library.properties"
+cp "$SOURCE_DIR/LICENSE.txt" "$WORK_DIR/LICENSE.txt"
+cp -r "$SOURCE_DIR/src" "$WORK_DIR/"
+cp -r "$SOURCE_DIR/examples" "$WORK_DIR/"
+
+cd "$WORK_DIR"
+particle library upload
+particle library publish