[Pattern-matching] Allow :name syntax in switch statements

There's a shorthand syntax in object matching

I tried to use it in switch statements and expected it will work.
My expectation: `Data()` will be destructured and its `name` parameter will be binded to a corresponding new `name` variable automatically.

but it fails with following errors:

It works only if I use an explicit syntax

But it looks excessive.

It also ain't working in switch expressions:

## Proposal: ##

Allow using the `:name` syntax in object matching in switch statements and switch expressions

Start by reviewing the object-matching examples and the reported failures in switch statements and switch expressions. Compare the proposed :name shorthand with the explicit syntax shown in the issue, then determine the language-specification changes needed for destructuring and binding. Done means the shorthand has defined behavior and works consistently in both switch forms.

Written by the indexing model from the issue text.