Added spinner class

include/progress/spinner.hpp

@@ -0,0 +1,32 @@
+#pragma once
+#include <iostream>
+#include <string>
+#include <atomic>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+class ProgressSpinner {
+  std::string _name{"Running"};
+  size_t _bar_width{80};  
+  std::string _start{"|"};
+  std::string _end{"|"};
+  std::mutex _mutex;
+  float _progress{0.0};
+  size_t _index{0};
+  std::vector<std::string> _states{"⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"}; //{"-", "\\", "|", "/"};
+  
+public:
+
+  explicit ProgressSpinner(const std::string& name) : _name(name) {}
+
+  void increment(float value) {
+    std::unique_lock<std::mutex> lock{_mutex};
+    std::cout << _name << " [";
+    _progress = value / 100.0;
+    float pos = _progress * static_cast<float>(_bar_width);
+    std::cout << _states[_index % _states.size()] << "] " << static_cast<int>(value) << "%\r";
+    std::cout.flush();
+    _index += 1;
+  }
+};