Improve validation for Contract Interact form

[marcinbodnar]

For some functions, the validation is missing.

For example:

• in some cases, we don't check if form input is filled (for example the owner_id in new_default_meta)
• we can check if the account_id has proper characters
• we can consider checking if the account_id exists
• we can check type_schema for some fields

The problem is that in some cases the user is informed about basic mistakes in the request error or in some cases in the Wallet while confirming tx. It is possible to minimize such situations.

[shelegdmitriy]

@marcinbodnar agree. There is related task to this https://github.com/near/developer-console-framework/issues/394

[marcinbodnar]

Thanks @shelegdmitriy