[clang-tools-extra] [clang-tidy] added `IgnoreAliasing` option to `readability-qualified-auto check` (PR #147060)

[Juan Besa via cfe-commits]

JuanBesa wrote:

Updated to `IgnoreAliasing` name for the option (also updated the title here)
Merged the testfile so that everythign runs in one file
Added the Limitations section for the case discussed. 



https://github.com/llvm/llvm-project/pull/147060