[MSPAINT] Distinguish between icons and cursors (#5884)

- Convert icons/*_cur.ico to the cursor files (*.cur).
- The hot spot is (16, 16) (default).
- Rename icons/ folder as img/.
- Use LoadCurs

[MSPAINT] Distinguish between icons and cursors (#5884)

- Convert icons/*_cur.ico to the cursor files (*.cur).
- The hot spot is (16, 16) (default).
- Rename icons/ folder as img/.
- Use LoadCursorW instead of LoadIconW
for cursors.
- Use CURSOR statements for cursor files
instead of ICON statements in rsrc.rc.
- I used GIMP to convert the icon files to the PNG files.
- I used RealWorld Cursor Editor to convert the PNG files to the cursor files.
CORE-19297

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