[Process] Process Execution Refactor (#2632)

* Swap execute output method

* Create "Process" class and move random string to Strings

* test

* Tweaks

common/process/process.cpp

@@ -0,0 +1,18 @@
+#include <string>
+#include <memory>
+#include "process.h"
+
+std::string Process::execute(const std::string &cmd)
+{
+	std::shared_ptr<FILE> pipe(popen(cmd.c_str(), "r"), pclose);
+	if (!pipe) { return "ERROR"; }
+	char        buffer[128];
+	std::string result;
+	while (!feof(pipe.get())) {
+		if (fgets(buffer, 128, pipe.get()) != nullptr) {
+			result += buffer;
+		}
+	}
+
+	return result;
+}

common/process/process.h

@@ -0,0 +1,19 @@
+#ifndef EQEMU_PROCESS_H
+#define EQEMU_PROCESS_H
+
+#include "../strings.h"
+
+#include <cstdio>
+
+#if _WIN32
+#define popen _popen
+#define pclose _pclose
+#endif
+
+class Process {
+public:
+	static std::string execute(const std::string &cmd);
+};
+
+
+#endif //EQEMU_PROCESS_H