Prisma client is not generated for MacOS users

[d-klotz]

When attempting to start Frigg in MacOs with the frigg start command, it fails because it can not locate the prisma client.
When looking at the core/prisma-mongodb/schema.prisma file, it's possible to see that we are sending in native in the binaryTarget array, so Frigg build command is probably filtering it out somewhere. Ideally the Prisma client should be generated according to the environment it's currently running in.

The current workaround is to run the following command in the backend folder:
npx prisma generate --schema=node_modules/@friggframework/core/prisma-mongodb/schema.prisma