Add Windows runner files for high DPI support and console output

- Created runner.exe.manifest to enable DPI awareness and dark mode support.
- Implemented utility functions in utils.cpp and utils.h for console creation and command line argument handling.
- Developed Win32Window class in win32_window.cpp and win32_window.h to manage high DPI-aware windows, including theme updates and message handling.

android/app/src/main/kotlin/com/example/notas/MainActivity.kt

@@ -0,0 +1,5 @@
+package com.example.notas
+
+import io.flutter.embedding.android.FlutterActivity
+
+class MainActivity : FlutterActivity()