Ensure that coreView/tcView are able to inline

Previously an import cycle between Type and TyCoRep meant that several
functions in TyCoRep ended up SOURCE import coreView. This is quite
unfortunate as coreView is intended to be fused into a larger pattern
match and not incur an extra call.

Fix this with a bit of restructuring:

 * Move the functions in `TyCoRep` which depend upon things in `Type`
   into `Type`
 * Fold contents of `Kind` into `Type` and turn `Kind` into a simple
   wrapper re-exporting kind-ish things from `Type`
 * Clean up the redundant imports that popped up as a result

Closes #17441.

Metric Decrease:
    T4334

1 files changed, 0 insertions, 0 deletions

diff --git a/utils/haddock b/utils/haddock
-Subproject b34ca2554a3440f092f585bb7fc1e9d4b2ca861
+Subproject e3c045f9265e39c1a77aa003bf35785e1871a9d