Declare tuple types

[jmeaster30]

I would like the ability to explicitly define a type as a tuple instead of relying on type inference

[jmeaster30]

let a: (i32, string) would have members '0' and '1' where '0' is an i32 and '1' is a string

Something that could be done in the future could be defining named members in a tuple type like: let a: (first: i32, second: string) where the member 'first' would have type i32 and 'second' would have the type string

[jmeaster30]

closing obsolete ocean issues