Port to_array.py to C++

This gets rid of a dependency on Python in $PATH (although Python is likely installed if we're using Meson). Nix people will like this a lot.

data/ToArray.cpp

@@ -0,0 +1,52 @@
+#include <fstream>
+
+int main(int argc, char *argv[])
+{
+	if (argc != 5)
+	{
+		return 1;
+	}
+	auto *outputCppPath = argv[1];
+	auto *outputHPath = argv[2];
+	auto *inputAnyPath = argv[3];
+	auto *symbolName = argv[4];
+	std::ifstream inputAny(inputAnyPath, std::ios::binary);
+	std::ofstream outputCpp(outputCppPath);
+	if (!outputCpp)
+	{
+		return 2;
+	}
+	outputCpp << "#include \"" << outputHPath << "\"\nconst unsigned char " << symbolName << "[] = { ";
+	auto dataLen = 0U;
+	while (true)
+	{
+		if (inputAny.eof())
+		{
+			break;
+		}
+		if (!inputAny)
+		{
+			return 3;
+		}
+		char ch;
+		inputAny.read(&ch, 1);
+		outputCpp << (unsigned int)(unsigned char)(ch) << ", ";
+		dataLen += 1;
+	}
+	outputCpp << " }; const unsigned int " << symbolName << "_size = " << dataLen << ";\n";
+	if (!outputCpp)
+	{
+		return 4;
+	}
+	std::ofstream outputH(outputHPath);
+	if (!outputH)
+	{
+		return 5;
+	}
+	outputH << "#pragma once\nextern const unsigned char " << symbolName << "[]; extern const unsigned int " << symbolName << "_size;\n";
+	if (!outputH)
+	{
+		return 6;
+	}
+	return 0;
+}