chore: add DEPENDENCIES.md

[wraithgar]

This adds a script to generate dependency information for the npm cli.
The dependency info shows all of the packages in npm that the npm-cli
team themselves manage.

This will help us especially when introducing semver-breaking changes (such as updating the engines) in our repos.

[wraithgar]

npm's devDependencies are in this chain, but of course none of its dependencies devDependencies are. I am not sure if we should keep those in here, breaking changes in devDependencies (outside of template-oss) don't usually mean a breaking change to the dependent.

[npm-robot]

no statistically significant performance changes detected

timing results

app-large	clean	lock-only	cache-only	cache-only peer-deps	modules-only	no-lock	no-cache	no-modules	no-clean	no-clean audit
npm@8	53.926 ±1.85	28.311 ±0.08	29.050 ±17.55	18.719 ±0.86	2.807 ±0.16	2.743 ±0.12	2.124 ±0.03	10.548 ±0.19	2.127 ±0.02	3.134 ±0.09
#4710	49.332 ±4.28	29.261 ±0.36	16.782 ±0.16	19.103 ±1.16	2.866 ±0.03	2.752 ±0.09	2.269 ±0.02	10.921 ±0.55	2.141 ±0.01	3.284 ±0.01

app-medium	clean	lock-only	cache-only	cache-only peer-deps	modules-only	no-lock	no-cache	no-modules	no-clean	no-clean audit
npm@8	37.489 ±1.37	21.907 ±0.09	12.104 ±0.10	12.816 ±0.55	2.430 ±0.05	2.523 ±0.06	2.282 ±0.06	7.732 ±0.38	2.285 ±0.32	2.735 ±0.04
#4710	35.860 ±1.17	22.308 ±0.29	12.180 ±0.24	13.083 ±0.06	2.499 ±0.13	2.608 ±0.05	2.285 ±0.01	7.913 ±0.11	2.092 ±0.00	2.859 ±0.06