Show examples of args formatting for "call" and "view" commands

[kcole16]

The current --help examples for call and view are unclear re: how to format args. Additionally, they should specify that the --accountId flag is required.

  near call <contractName> <methodName> [args]  schedule smart contract call which can modify state
  near view <contractName> <methodName> [args]  make smart contract call which can view state

Attempts to use [test], ['test'], ["test"], etc all returned an error.

near call studio-g2dknmak9 addMessage [test] --accountId <accountId>

[vgrichina]

re: having --accountId flag as required – I kinda feel that we should either make it optional and instead remember account selected during near login and use it as default. Or we should restructure our commands around the fact that they always require account and have something like this near calling_account_id call contract_name method_name

as for args examples – it is contract-specific what can be accepted (in-theory any arbitrary blob). But we probably can show example of calling some of our sample contracts (like counter).