Added screenshot command

src/FractalApp.cpp

@@ -90,6 +90,10 @@ void FractalInspectorApp::ParseCmdLineMessage(const std::string &message) {
 
     }
 
+    if (misc::string_matches(cmd, {"screenshot", "screeny", "capture"})) {
+        return TakeScreenshot();
+    }
+
     console->Log(std::format("No such command: {}", cmd), Colors::Red);
 }
 
@@ -680,7 +684,13 @@ void FractalInspectorApp::TakeScreenshot() {
     }
     uint8_t* frameBuffer = reinterpret_cast<uint8_t*>(pdatac3.data());
 
-    std::ofstream file("screenshot.bmp", std::ios::out | std::ios::binary);
+    time_t t = std::time(nullptr);
+    tm tm = *std::localtime(&t);
+
+    std::ostringstream filename;
+    filename << std::put_time(&tm, "%Y-%m-%d %H-%M-%S") << ".bmp";
+
+    std::ofstream file(filename.str(), std::ios::out | std::ios::binary);
 
     Vector2i wh = this->canvas->GetDimensions();
 
@@ -719,4 +729,6 @@ void FractalInspectorApp::TakeScreenshot() {
 
     file.close();
 
+    console->Log(std::format("Took screenshot: {}", filename.str()));
+
 }