Improve startup speed/performance of CLI

[Even with telemetry turned off](https://github.com/apache/cordova-cli/issues/405), our CLI seems a bit slow sometimes:

```
C:\Users\Jan>cordova -v | gnomon
1.1532s 8.1.2 (cordova-lib@8.1.1)
0.0014s

Total 1.1572s

C:\Users\Jan>node -v | gnomon
0.0116s v10.15.1
0.0010s

Total 0.0135s

C:\Users\Jan>npm -v | gnomon
0.6859s 6.4.1
0.0016s

Total 0.6893s

C:\Users\Jan>ngrok -v | gnomon
0.0131s ngrok version 2.2.8
0.0017s

Total 0.0157s
```

(Yes, I am working on a not very powerful machine here)
(`ionic` is even slower with >7 seconds - but that's no excuse ;) )

Reproduce the reported `cordova -v` timing on a comparable machine and compare it with the `node`, `npm`, and `ngrok` timings shown in the issue. Trace the CLI startup path to identify the source of the delay; done means startup is measurably faster without telemetry enabled and the existing version output still works.

Written by the indexing model from the issue text.