fix(perf): lazy load un-common dependencies for npm run

[H4ad]

I know we avoid lazy loading but I think this case is worthy:

Before:

$ hyperfine --warmup 3 "node ./bin/npm-cli.js run empty"
Benchmark 1: node ./bin/npm-cli.js run empty
  Time (mean ± σ):     197.3 ms ±   3.5 ms    [User: 183.1 ms, System: 51.9 ms]
  Range (min … max):   193.2 ms … 207.5 ms    15 runs

After:

$ hyperfine --warmup 3 "node ./bin/npm-cli.js run empty"
Benchmark 1: node ./bin/npm-cli.js run empty
  Time (mean ± σ):     184.6 ms ±   2.3 ms    [User: 170.1 ms, System: 51.1 ms]
  Range (min … max):   181.6 ms … 190.5 ms    16 runs

[wraithgar]

We need to be 100% sure this code path isn't hit when running npm i -g npm

[wraithgar]

normalizeData and gitHead are run as part of the prepare process. This is used by npm when preparing a package.json for publishing. That is not done during an install so I think this is safe for npm i -g npm

[wraithgar]

Additionally, thinking of potential future problems. We are moving in the direction of doing fewer normalizations, not more. So the likelihood of us adding either of those steps during install is very low.

[wraithgar]

Eventually normalize-package-data needs to be brought under the umbrella of this package. Eventually.