Add more installer links to the homepage

[Kreyren]

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Making it easier for new NIx users to install NixOS on their systems

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See NixOS/nixpkgs#277256

tldr; user had a laptop which needs linux-6.2 to have a working wifi and install nixos painlessly, but the only installer on the website provides linux-6.1.69 only and the new user can't possibly be familiar with hydra to know where to find the newer kernel installer (i sure wasn't) -> Implement a way to download the newer kernel installers from the website for these scenarios

Page links
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https://nixos.org/download

Additional context
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• I already created a Pull Request