Add `WeightNorm` reparametrization #3613

Job	Run time
Documentation	9m 11s
Julia 1.10 - ubuntu-latest - x64	18m 31s
Julia 1 - ubuntu-latest - x64	27m 43s
Julia nightly - ubuntu-latest - x64	5m 44s
Julia 1 - windows-latest - x64	29m 54s
Julia 1 - macOS-latest - aarch64	17m 1s
	1h 48m 4s

Provide feedback