fix(angular): update typescript to version 4 for ng new

[macjohnny]

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• Tests for the changes are included.

What is the current behavior?

After creating a new project, when creating a component with

ng new -c=@nativescript/schematics project-name --shared ng g component bla 

an error occurs:

Cannot read property 'kind' of undefined 

What is the new behavior?

No error occurs

Fixes/Implements/Closes #302

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[macjohnny]

@cla-bot check

[macjohnny]

@cla-bot check

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[NathanWalker]

Thank you @macjohnny