[Spec Deviation] Direct table type descriptor is not implemented

[Anoukh]

Description:
As per the spec (v0.990:2019-01-16), the table type descriptor is not implemented

table-type-descriptor := table { column-type-descriptor+ }
column-type-descriptor := individual-column-type-descriptor | column-record-type-reference
individual-column-type-descriptor := [key] type-descriptor column-name ;
column-record-type-reference := * type-reference [key-specifier (, key-specifier)*] ;
key-specifier := key column-name
column-name := identifier

Affected Versions:
0.990.2

[hasithaa]

Table syntax under review and will be revamped with ballerina-platform/ballerina-spec#354 in future spec.

@grainier Please resolve this issue when we implement the new table implementation.

[hasithaa]

This is changed with ballerina-platform/ballerina-spec#47. Hence resolving.