feat: support V8 snapshots on Windows

[DimitarTachev]

PR Checklist

• [x] The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/CONTRIBUTING.md#commit-messages.
• [x] 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.
• [x] You have signed the [CLA].
• [x] All existing tests are passing: https://github.com/NativeScript/nativescript-dev-webpack/blob/master/CONTRIBUTING.md#testing-locally-by-running-e2e-tests
• [ ] Tests for the changes are included.

What is the current behavior?

Providing the --env.snapshot flag on Windows is throwing an exception.

What is the new behavior?

The --env.snapshot flag is valid on Windows and it is generating snapshots in a docker container.

Related to: https://github.com/NativeScript/nativescript-dev-webpack/issues/1054 and https://github.com/NativeScript/nativescript-cli/pull/5037

[DimitarTachev]

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