discussion: introduce gblend scaffold command

[tmsdkeys]

When you run this command:

gblend init -t github-user/github-repo path-to-the-contract

It will add a (template) Fluentbase contract to the specified path. However, semantically gblend init sounds a bit weird to me here if I have an active project already, so opening up for discussion but I would like to have:

gblend scaffold path-to-the-contract
gblend scaffold -t github-user/github-repo path-to-the-contract

• where the first one is similar to the minimal version i proposed in feature request: minimial gblend init #2, but exclusively adding WASM directory
• the second one is just a wrapper around the init version (but semantically clearer IMO)