Update saved tutorial projects to not use pub or priv access modifiers

[joshuahannan]

Issue to be solved

We're removing pub and priv modifiers from the language and docs in #146
so the saved playground projects for the tutorials need to also be updated.

Suggest A Solution

• Copy the projects for each tutorial
• Remove the access modifiers and replace them with access(all) and access(self)
• Save and export new projects
• add these links to their respective tutorials
• Test the links in incognito mode to make sure they are loading properly and that the contracts still deploy and transactions run properly

• Hello World
• Resources
• Capabilities
• NFT 1
• NFT 2
• FT
• Marketplace
• Voting
• Composable resources

What are you currently working on that this is blocking?

No response

[nialexsan]

currently the changes are reflected in the next version:
https://developers.flow.com/next/cadence/anti-patterns