chore(users/Profpatsch): bring reverse-haskell-deps into shape

Add a cabal file and move into subdir.
Use MyPrelude & fix a few linter warnings.

Change-Id: I19d5ba47be789fc24f8e02ee8721f73c706ae3e9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8465
Reviewed-by: Profpatsch <mail@profpatsch.de>
Autosubmit: Profpatsch <mail@profpatsch.de>
Tested-by: BuildkiteCI

users/Profpatsch/reverse-haskell-deps/reverse-haskell-deps.cabal

@@ -0,0 +1,16 @@
+cabal-version:      2.4
+name:               reverse-haskell-deps
+version:            0.1.0.0
+author:             Profpatsch
+maintainer:         mail@profpatsch.de
+
+library
+    exposed-modules:          ReverseHaskellDeps.hs
+
+    build-depends:
+        base >=4.15 && <5,
+        my-prelude,
+        tagsoup,
+        nicify-lib
+
+    default-language: Haskell2010