feat: support dynamic ES6 import

[sis0k0]

PR Checklist

• The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/CONTRIBUTING.md#commit-messages.
• There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it.
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• Tests for the changes are included.

What is the current behavior?

Currently, the following syntax is not supported in TS projects

import(`~/app/home/home.module`)

What is the new behavior?

The dynamic import will be supported in TS/Angular projects.

See also: NativeScript/nativescript-app-templates#68

[sis0k0]

test

[rosen-vladimirov]

test

[manoldonev]

test

[rosen-vladimirov]

test