feat: enable hmr by default for new projects

[Fatme]

Implements: #4394

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[rosen-vladimirov]

I think the PR message and the variable isHmrEnabledByDefault are incorrect - this PR enables setting hmr in nsconfig.json and there's nothing like default here. Maybe the variable should be isHmrEnabledInProject, but it is also important to make it easy for end-users to enable the feature in nsconfig.json, i.e. the property should be self explaining what exactly it will do when you set it to true/false

[KristianDD]

Maybe add a warning for the user that we will override both hmr and bundle options.

Dismiss as the required changes had been implemented