fix(new iot): angular package generation flag for MES >= 10.2.7

[pedromsilvapt]

The --isAngularPackage flag type was incorrectly marked as string, which was making it so that it was never recognized as true.

Furthermore, there was a bug in the logic of version comparison (missing parentheses were causing, even with the --isAngularPackage flag set to true, on MES versions 10.2.7/8, the generation to happen for ATL packages instead of Angular ones. This part of the code was refactored to make it more readable.

The test cases were updated to cover both the cases where the flag is explicitly passed or not, and for both versions prior and subsequent to 10.2.7. Additionally, a check was added to make sure angular package was indeed being generated (thought the presence of the file angular.json). All tests are passing now:

Fixes #470.

[pedromsilvapt]

Hi @jrk94, rebased the branch with the conflicts resolved.

I changed the code of the cmf new iot command as well, because the tests were failing due to some recent changes on the LoadDependencies method. I usually don't like changing the code just to fix a test, but in this case, I actually think this solution is actually cleaner than calling that method 😁

[pedromsilvapt]

Fixes #470