breaking: drop q dependency

[erisu]

Motivation, Context & Description

• Remove direct requirement of Q dependency from cordova-ios
• Keep the Q.progress calls which is available from superspawn.
• Use Native Promises

Requires PR #851 & #859

Testing

• npm t

Checklist

• I've run the tests to see all new and existing tests pass

[codecov-commenter]

Codecov Report

Merging #860 into master will decrease coverage by 0.06%.
The diff coverage is 67.74%.

@@            Coverage Diff             @@
##           master     #860      +/-   ##
==========================================
- Coverage   74.52%   74.46%   -0.07%     
==========================================
  Files          13       13              
  Lines        1680     1676       -4     
==========================================
- Hits         1252     1248       -4     
  Misses        428      428              

Impacted Files	Coverage Δ
bin/templates/scripts/cordova/lib/run.js	19.62% <0.00%> (-0.75%)	⬇️
bin/templates/scripts/cordova/lib/Podfile.js	73.20% <33.33%> (-0.13%)	⬇️
bin/templates/scripts/cordova/lib/check_reqs.js	46.93% <66.66%> (ø)
bin/templates/scripts/cordova/lib/prepare.js	85.67% <66.66%> (ø)
bin/templates/scripts/cordova/lib/build.js	50.25% <71.42%> (-0.26%)	⬇️
bin/templates/scripts/cordova/Api.js	71.53% <100.00%> (+0.10%)	⬆️
...emplates/scripts/cordova/lib/listEmulatorImages.js	100.00% <100.00%> (ø)
bin/templates/scripts/cordova/lib/versions.js	100.00% <100.00%> (ø)

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[breautek]

Also note that I ignored anything related to the prerequisite PRs.

[breautek]

LGTM