Include previewnet when creating a fresh flow.json file with flow init

[alilloig]

Issue To Be Solved

When you create a flow.json file using cli, it doesn't includes previewnet under networks, but later when you use the dependency manager for adding contracts such as NonFungibleToken, it will specify an alias for that network, resulting in a bad flow.json

Suggest A Solution

If this is related to the C1 upgrade just close and ignore it, if previewnet if going to stay, just add it to the networks object when creating a fresh flow.json file

[btspoony]

I think all previewnet related stuff need to be removed in flow-cli
Input hint of previewnet in the dependency manager is also annoying
@chasefleming

[chasefleming]

Yep, correct. Previewnet is in the process of being removed. The latest version should solve some previewnet related issues.