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/JsonArray/remove.cpp

@@ -0,0 +1,89 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2023, Benoit BLANCHON
+// MIT License
+
+#include <ArduinoJson.h>
+#include <catch.hpp>
+
+TEST_CASE("JsonArray::remove()") {
+  DynamicJsonDocument doc(4096);
+  JsonArray array = doc.to<JsonArray>();
+  array.add(1);
+  array.add(2);
+  array.add(3);
+
+  SECTION("remove first by index") {
+    array.remove(0);
+
+    REQUIRE(2 == array.size());
+    REQUIRE(array[0] == 2);
+    REQUIRE(array[1] == 3);
+  }
+
+  SECTION("remove middle by index") {
+    array.remove(1);
+
+    REQUIRE(2 == array.size());
+    REQUIRE(array[0] == 1);
+    REQUIRE(array[1] == 3);
+  }
+
+  SECTION("remove last by index") {
+    array.remove(2);
+
+    REQUIRE(2 == array.size());
+    REQUIRE(array[0] == 1);
+    REQUIRE(array[1] == 2);
+  }
+
+  SECTION("remove first by iterator") {
+    JsonArray::iterator it = array.begin();
+    array.remove(it);
+
+    REQUIRE(2 == array.size());
+    REQUIRE(array[0] == 2);
+    REQUIRE(array[1] == 3);
+  }
+
+  SECTION("remove middle by iterator") {
+    JsonArray::iterator it = array.begin();
+    ++it;
+    array.remove(it);
+
+    REQUIRE(2 == array.size());
+    REQUIRE(array[0] == 1);
+    REQUIRE(array[1] == 3);
+  }
+
+  SECTION("remove last bty iterator") {
+    JsonArray::iterator it = array.begin();
+    ++it;
+    ++it;
+    array.remove(it);
+
+    REQUIRE(2 == array.size());
+    REQUIRE(array[0] == 1);
+    REQUIRE(array[1] == 2);
+  }
+
+  SECTION("In a loop") {
+    for (JsonArray::iterator it = array.begin(); it != array.end(); ++it) {
+      if (*it == 2)
+        array.remove(it);
+    }
+
+    REQUIRE(2 == array.size());
+    REQUIRE(array[0] == 1);
+    REQUIRE(array[1] == 3);
+  }
+
+  SECTION("remove by index on unbound reference") {
+    JsonArray unboundArray;
+    unboundArray.remove(20);
+  }
+
+  SECTION("remove by iterator on unbound reference") {
+    JsonArray unboundArray;
+    unboundArray.remove(unboundArray.begin());
+  }
+}