Functions in `windows::Win32::Graphics::Gdi` should return `Result`

In `windows::Win32::Graphics::Gdi`, there are many functions like [`CreateSolidBrush()`](https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Graphics/Gdi/fn.CreateSolidBrush.html), [`CreateBitmap()`](https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Graphics/Gdi/fn.CreateBitmap.html), [`CreateBitmapIndirect()`](https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Graphics/Gdi/fn.CreateBitmapIndirect.html), [`CreateEllipticRgn()`](https://microsoft.github.io/windows-docs-rs/doc/windows/Win32/Graphics/Gdi/fn.CreateEllipticRgn.html) etc. that return handles, although the docs at [learn.microsoft.com](https://learn.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-createsolidbrush) say, they can fail. So, they should return `Result`s like many other fallible functions in the `windows` crate already do.

Start with the listed GDI entry points, including CreateSolidBrush(), CreateBitmap(), CreateBitmapIndirect(), and CreateEllipticRgn(), and compare their Microsoft documentation with the existing fallible functions in the windows crate. Done means the affected functions in windows::Win32::Graphics::Gdi return Result values consistently with their documented failure behavior.

Written by the indexing model from the issue text.