Separated Image from Screen to avoid tinkering with Windows console; Added Canvas methods for drawing Pixels/Images directly

.gitignore

@@ -3,6 +3,10 @@
 *
 !*/
 
+# Ignore build directories generated by default MSVC CMake integration
+# (otherwise causes terribly slow indexing)
+out/
+
 # Allowed top-level files:
 !.clang-format
 !.clang-tidy