🚀 - Expose native input from Taiga UI controls

[waterplea]

Which @taiga-ui/* package(s) are relevant/releated to the feature request?

core

Description

Right now native input tag is hidden inside Taiga UI components. This makes it hard to put some native attributes on it like id or keyboard type and listen to native events if needed. We need to refactor our components to work this way:

<tui-input>
  <input tuiTextfield />
</tui-input>

For the time being we must support both approaches and mention new one as preferred, deprecating the old way. In 3.0 we will fully migrate to exposed inputs.