Consistent qualified imports

[lehins]

Text

It is more consistent to import Text qualified as T, instead of Text, so we should make it consistent and switch all Data.Text* occurnaces to as T:

[nix-shell:~/iohk/cardano-ledger]$ git grep "import qualified Data.Text as Text$" | wc -l
14
[nix-shell:~/iohk/cardano-ledger]$ git grep "import qualified Data.Text as T$" | wc -l
49

ByteString

Other qualified imports that needs fixing:

import qualified Data.ByteString as BS
import qualified Data.ByteString.Short as SBS
import qualified Data.ByteString.Lazy as BSL

Here is some proof for anyone that wants to object:

[nix-shell:~/iohk/cardano-ledger]$ git grep "import qualified Data.ByteString.Lazy as LBS" | wc -l
19
[nix-shell:~/iohk/cardano-ledger]$ git grep "import qualified Data.ByteString.Lazy as BSL" | wc -l
57

Others:

• Data.List.NonEmpty as NE, not as NonEmpty, etc.

import qualified Data.List.NonEmpty as NE

• import qualified Data.Foldable as F, not as Foldable, etc.

import qualified Data.Foldable as F

• Data.Aeson*, eg.:

import qualified Data.Aeson as Aeson
import qualified Data.Aeson.Key as Aeson
import qualified Data.Aeson.Encoding as Aeson

• BaseX encoding

import qualified Data.ByteString.Base16 as BS16
import qualified Data.ByteString.Base64 as BS64

More bullet points are likely to be added later