Move "good" badge helpers from lib/ to services/ (#3101)

This moves a few helpers from `lib/` to `services/`:

build-status.js
build-status.spec.js
color-formatters.js
color-formatters.spec.js
contributor-count.js
licenses.js
licenses.spec.js
php-version.js
php-version.spec.js
text-formatters.js
text-formatters.spec.js
version.js
version.spec.js

And one from `lib/` to `core/`:

unhandled-rejection.spec.js

The diff is long, but the changes are straightforward.

Ref #2832

services/npm/npm-collaborators.service.js

@@ -1,6 +1,6 @@
 'use strict'
 
-const { renderContributorBadge } = require('../../lib/contributor-count')
+const { renderContributorBadge } = require('../contributor-count')
 const NpmBase = require('./npm-base')
 
 const keywords = ['node']

services/npm/npm-downloads.service.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const Joi = require('joi')
-const { metric } = require('../../lib/text-formatters')
+const { metric } = require('../text-formatters')
 const { BaseJsonService } = require('..')
 const { nonNegativeInteger } = require('../validators')
 

services/npm/npm-license.service.js

@@ -1,6 +1,6 @@
 'use strict'
 
-const { renderLicenseBadge } = require('../../lib/licenses')
+const { renderLicenseBadge } = require('../licenses')
 const { toArray } = require('../../lib/badge-data')
 const NpmBase = require('./npm-base')
 

services/npm/npm-version.service.js

@@ -1,7 +1,7 @@
 'use strict'
 
 const Joi = require('joi')
-const { renderVersionBadge } = require('../../lib/version')
+const { renderVersionBadge } = require('../version')
 const { NotFound } = require('..')
 const NpmBase = require('./npm-base')