[API] Implement Zone Sidecar (#3635)

* Zone sidecar work

* Process management work

* Merge

* Sidecar work

* API config option

* Request proxy work

* Proxy headers and params

* Change port

* Remove code

* Sim work

* Sidecar work

* Update loot_simulator_controller.cpp

* Update loot_simulator_controller.cpp

* Formatting

* Post merge change

* Windows compile fix

* Update sidecar_api.cpp

* Update strings.cpp

common/process.cpp

@@ -0,0 +1,44 @@
+#include <string>
+#include <fstream>
+#include <algorithm>
+#include "process.h"
+
+inline std::string random_string(size_t length)
+{
+	auto        randchar = []() -> char {
+		const char   charset[] = "0123456789" "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz";
+		const size_t max_index = (sizeof(charset) - 1);
+		return charset[static_cast<size_t>(std::rand()) % max_index];
+	};
+	std::string str(length, 0);
+	std::generate_n(str.begin(), length, randchar);
+	return str;
+}
+
+std::string Process::execute(const std::string &cmd, bool return_result)
+{
+	std::string random     = "/tmp/" + random_string(25);
+	const char  *file_name = random.c_str();
+
+	if (return_result) {
+#ifdef _WINDOWS
+		std::system((cmd + " > " + file_name + " 2>&1").c_str());
+#else
+		std::system((cmd + " > " + file_name + " 2>&1").c_str());
+#endif
+	}
+	else {
+		std::system((cmd).c_str());
+	}
+
+	std::string result;
+
+	if (return_result) {
+		std::ifstream file(file_name);
+		result = {std::istreambuf_iterator<char>(file), std::istreambuf_iterator<char>()};
+		std::remove(file_name);
+
+	}
+
+	return result;
+}