Make zero in place

[wsmoses]

It's 2 am so I'lls tart this later, but something like this.

cc @ChrisRackauckas

[github-actions]

Benchmark Results

	main	ee3bffb...	main/ee3bffb20dd94a...
basics/overhead	4.95 ± 0.01 ns	4.34 ± 0.001 ns	1.14
time_to_load	0.353 ± 0.0034 s	0.353 ± 0.0026 s	0.999

Benchmark Plots

A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.
Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).

[ChrisRackauckas]

I feel like make_zero and make_zero! should be moved out of Enzyme as a general Julia tool, even to Base as the standard zero function extension. I kind of just use it everywhere...

[wsmoses]

Not opposed, but have to start somewhere.