Add remaining haskell book exercises

Haskell-book/23/RandomExample/package.yaml

@@ -0,0 +1,34 @@
+name:                RandomExample
+version:             0.1.0.0
+maintainer:          "belka@caraus.de"
+copyright:           "2018 Eugene Wissner"
+
+dependencies:
+- base >= 4.7 && < 5
+- random
+- transformers
+
+library:
+  source-dirs: src
+
+executables:
+  RandomExample-exe:
+    main:                Main.hs
+    source-dirs:         app
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - RandomExample
+
+tests:
+  RandomExample-test:
+    main:                Spec.hs
+    source-dirs:         test
+    ghc-options:
+    - -threaded
+    - -rtsopts
+    - -with-rtsopts=-N
+    dependencies:
+    - RandomExample