[Feature] Add number of vuln count per type to npm audit fix output

[ruyadorno]

Currently reify-output will also print the number of vulns per type, e.g:

found 611 vulnerabilities (608 low, 3 high)
  run `npm audit fix` to fix them, or `npm audit` for details

It should also implement this style of count per type for npm audit fix output.

Current output:

fixed 606 of 611 vulnerabilities in 1618 scanned packages
  5 vulnerabilities required manual review and could not be updated

Proposed output:

fixed 606 of 611 vulnerabilities in 1618 scanned packages
  5 vulnerabilities (2 low, 3 high) required manual review and could not be updated

from: npm/rfcs#266

[salesh]

Hi @ruyadorno isn't the case that in latest version 7

For example

npm audit

6 vulnerabilities (4 low, 2 high)

To address issues that do not require attention, run:
  npm audit fix

To address all issues (including breaking changes), run:
  npm audit fix --force

npm audit fix

now it's just showing up to date and at the bottom severity vulnerabilities

up to date, audited 509 packages in 3s

1 package is looking for funding
  run `npm fund` for details

# npm audit report

minimist  <0.2.1 || >=1.0.0 <1.2.3
Prototype Pollution - https://npmjs.com/advisories/1179
fix available via `npm audit fix --force`
Will install express-generator@4.2.0, which is a breaking change
node_modules/minimist
  mkdirp  0.4.1 - 0.5.1
  Depends on vulnerable versions of minimist
  node_modules/express-generator/node_modules/mkdirp
    express-generator  >=4.8.0
    Depends on vulnerable versions of mkdirp
    node_modules/express-generator

3 low severity vulnerabilities

To address all issues (including breaking changes), run:
  npm audit fix --force

Maybe I am missing something.