docs: migrate smart contract docs to hiero-contracts (#445)#474

ayesigaisaac wants to merge 3 commits into

hashgraph:mainhashgraph/hedera-docs:mainfrom

ayesigaisaac:docs/445-hiero-smart-contracts-migrationayesigaisaac/hedera-docs:docs/445-hiero-smart-contracts-migrationCopy head branch name to clipboard