Fix flowtype imports

[flexxnn]

There is a problem with flowtype, when we are using

import type { foo, foo1 } from 'something'

foo and foo1 - will be any in inspector

And it works good, when types are imported as:

import { type foo, type foo1 } from 'something'

More information about this is here:
flow/flow-for-vscode#23

[stcherenkov]

Ok! Also "identifier" is better than "declaration" not just because of bugs – with this approach we import both module and its' interface in one place.