[EPIC] EVM Tutorials — placeholder pages (3)

[theekrystallee]

Build out the placeholder tutorials in evm/tutorials/.

• Write tutorial 'Read Contract Data' (evm/tutorials/beginner/read-contract-data) #595
• Write tutorial 'Create a Simple NFT' (evm/tutorials/beginner/simple-nft) #596
• Write tutorial 'Events and Logs' (evm/tutorials/intermediate/events-and-logs) #597