Reimplement CUDNN_jll using platform tags

[maleadt]

Building on #4677, this is a first test of a JLL that actually uses the JLL machinery to depend on and load a compatible set of CUDA runtime libraries.

[maleadt]

Is Yggdrasil's clone of General lagging behind?

 Warning: Unable to resolve CUDA_Runtime_jll
└ @ BinaryBuilderBase /depot/packages/BinaryBuilderBase/BstWr/src/Dependencies.jl:228

Works locally.

[giordano]

https://dev.azure.com/JuliaPackaging/Yggdrasil/_build/results?buildId=18613&view=logs&j=96c13d9d-dfd2-51e5-2f76-4a0b3ce09abc&t=09532434-8b0a-5f0e-118d-a3181cde5ec8&l=26

[ Info: PkgServer: https://us-east.pkg.julialang.org/registries.conservative -- last updated: Thu, 24 Mar 2022 09:05:22 GMT (3 hours, 12 minutes, 23 seconds ago)
┌ Warning: The PkgServer registry is older than 1 hour
└ @ Main none:27

It's older than the latest commit to General, but newer than the commit which included CUDA_Runtime_jll 🤔

Edit: it turns out I can't read times, it is older than JuliaRegistries/General@03085f5

[maleadt]

#5699