WIP [kowainik#227] Create Relude.Extra module

This is currently WIP as there are still errors while building.
Maybe someone can help me with that? I don't know how to fix these:

```
The class method signature for ‘...’ lacks an accompanying binding
```

or

```
‘...’ is not a (visible) method of class ‘...’
```

closes kowainik#227

Author: mstruebing

src/Relude/Extra.hs

@@ -0,0 +1,37 @@
+{-# LANGUAGE Safe #-}
+
+{- |
+Copyright:  (c) 019 Kowainik
+SPDX-License-Identifier: MIT
+Maintainer: Kowainik <xrom.xkov@gmail.com>
+
+This module exports all extra-related stuff.
+-}
+
+module Relude.Extra
+       ( module Relude.Extra.Bifunctor       
+       , module Relude.Extra.CallStack
+       , module Relude.Extra.Enum
+       , module Relude.Extra.Foldable
+       , module Relude.Extra.Foldable1
+       , module Relude.Extra.Group
+       , module Relude.Extra.Lens
+       , module Relude.Extra.Map
+       , module Relude.Extra.Newtype
+       , module Relude.Extra.Tuple
+       , module Relude.Extra.Type
+       , module Relude.Extra.Validation
+       ) where
+
+import Relude.Extra.Bifunctor
+import Relude.Extra.CallStack
+import Relude.Extra.Enum
+import Relude.Extra.Foldable
+import Relude.Extra.Foldable1
+import Relude.Extra.Group
+import Relude.Extra.Lens
+import Relude.Extra.Map
+import Relude.Extra.Newtype
+import Relude.Extra.Tuple
+import Relude.Extra.Type
+import Relude.Extra.Validation

src/Relude/Extra/Bifunctor.hs

@@ -25,7 +25,9 @@ module Relude.Extra.Bifunctor
        , secondF
        ) where
 
-import Relude
+import Relude.Functor (Bifunctor, Functor, second, fmap, first)
+import Relude.Function ((.))
+import Relude.Extra.Validation (bimap)
 
 {- | Maps a function over both elements of a bifunctor.
 

src/Relude/Extra/Validation.hs

@@ -41,7 +41,12 @@ module Relude.Extra.Validation
 
 import GHC.TypeLits (ErrorMessage (..), TypeError)
 
-import Relude
+import Relude.Base (Constraint, Eq, Ord, Show)
+import Relude.Functor (Functor, Bifunctor)
+import Relude.Applicative (Alternative, Applicative)
+import Relude.Monad (Monad, Either(Left, Right))
+import Relude.Monoid (Monoid, Semigroup)
+import Relude.Foldable (Bitraversable, Bifoldable, Foldable, Traversable)
 
 -- >>> $setup
 -- >>> import Relude