feat: add Gnoland Developer Portal, a tutorial docs for Gno

[dongwon8247]

This PR is the submission to GOR - Write Tutorials (https://github.com/gnolang/gno/issues/408)

Links for tutorial docs:

• Github: https://github.com/onbloc/gnoland-tutorials
• Gitbook: https://onbloc.gitbook.io/gnoland-developer-portal/ (The Github and Gitbook are synced)

Tutorial includes:

• General overview and concepts of Blockchain and Gnoland for the developers coming from Web2 or Solidity.
• Running a local environment & installing a local node (Link)
• Interacting with the chain from the CLI (Link)
• Introducing the key stdlibs & pkgs (Link)
• Building a Realm with examples (Link)
• Deploying & Checking Realm with gnodev (Link1, Link2)
• Porting existing Solidity contract to Gnoland Realm with TDD (Link)
• Gnolang RPC Endpoints for dapp developers (Link)
• Building a dapp guide with a sample dapp (Link)

Will be updating the tutorial docs regularly, and hope developers find this tutorial helpful.

Any suggestions to improve this tutorial for developers are welcome!

[moul]

Thank you.

I suggest you add more all-in-one tutorials. I.e., it's not obvious how to actually start writing a contract, i.e., using gnodev before even thinking about publishing or running a full node.

Last hash: https://github.com/onbloc/gnoland-tutorials/commit/f490671e73a894e9e9d412c62ef3bc350401fb5e

[dongwon8247]

I suggest you add more all-in-one tutorials. I.e., it's not obvious how to actually start writing a contract, i.e., using gnodev before even thinking about publishing or running a full node.

I split Docs / Tutorials and added more all-in-one content to Tutorials. What do you think?

https://onbloc.gitbook.io/gnoland-developer-portal/

[moul]

I like it much better 👍