allow annotations in fields with inplace tuple

[nofun97]

Currently sysl grammar does not allow annotations for an inplace tuple.

App:
    !type Tuple:
        @attr = "abc"
        a <:
            @attr = "abc"
            b <: string

This should be allowed to add annotations to the field Tuple.a.

[anzdaddy]

Make sure to also support inline annotations:

App:
    !type Tuple [attr = "abc"]:
        a [attr = "abc"] <:
            b <: string