Generalising the activity and package params when created the Android product project
Change the product's default package

Previous the product's default package was the following way:

old.default.package -> old.default.package.product
old.default.package.domain -> old.defaula.package.domain.product

Now this will be:

old.default.package -> old.default.package.product (the same way)
old.default.package.domain -> old.default.package.product.domain (a new pattern)

This change was necessary because in manifest file we use a relative
path to reference the activity. The previous way was difficult to do it.