feat: rootless workspace init provides suggestion

[fritzy]

Adds a warning message suggesting the use of --include-workspace-root when ENOENT is thrown for the npm init command when specifying one or more workspaces.

[fritzy]

❯ npm init -w thingy
npm WARN Missing package.json. Try with `--include-workspace-root`. 
npm ERR! code ENOENT
npm ERR! syscall open
npm ERR! path /Users/fritzy/projects/scratchpad/test1/package.json
npm ERR! errno -2
npm ERR! enoent ENOENT: no such file or directory, open '/Users/fritzy/projects/scratchpad/test1/package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent 

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/fritzy/.npm/_logs/2022-08-04T16_27_31_574Z-debug-0.log

[npm-cli-bot]

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	45.181 ±4.41	26.079 ±0.03	26.718 ±5.05	28.351 ±3.13	4.490 ±0.17	4.195 ±0.09	3.409 ±0.02	16.525 ±0.15	3.420 ±0.05	5.141 ±0.19
#5261	48.996 ±2.69	25.330 ±0.17	31.747 ±12.16	26.839 ±1.52	4.139 ±0.09	4.144 ±0.07	3.343 ±0.10	16.529 ±0.27	3.314 ±0.05	5.023 ±0.45

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	32.781 ±2.05	19.481 ±0.07	17.825 ±0.10	19.673 ±0.16	3.889 ±0.06	3.993 ±0.04	3.522 ±0.20	12.379 ±0.10	3.335 ±0.02	4.547 ±0.11
#5261	32.545 ±1.87	19.064 ±0.43	17.567 ±0.10	18.872 ±0.13	3.946 ±0.06	3.836 ±0.11	3.398 ±0.01	12.146 ±0.06	3.235 ±0.04	4.651 ±0.11