cli: `anchor new` does not use new unique program id and does not add new program id to `Anchor.toml`

[armaniferrante]

I think what we want to do here is first complete https://github.com/project-serum/anchor/issues/695. And then use that new macro instead of hardcoding a keypair.

[acheroncrypto]

Fixed in #2509 and #2516