Add NYTimes recipe extraction from __NEXT_DATA__ JSON tag

- Add Roux.NYTimes module with:
  - extractNextData: finds <script id="__NEXT_DATA__"> tag in HTML
    and parses its JSON content via aeson
  - parseNYTRecipe: maps NYTimes recipe JSON structure into a
    typed intermediate representation (NYTRecipe, NYTIngredientGroup,
    NYTIngredientItem, NYTStepGroup, NYTStepItem)
- Supports all NYTimes Cooking data: title, URL, total time, yield,
  topnote, ingredient groups (with section names), step groups
- Add aeson to dependencies
- Add 4 tests: extraction + parsing for both fried-rice and
  carrot-risotto example HTML files
- Wire NYTimesSpec into test runner

roux-server.cabal

@@ -18,6 +18,7 @@ library
   exposed-modules:
       Roux
       Roux.Html
+      Roux.NYTimes
       Roux.Parser
       Roux.RecipeIndex
       Roux.Server
@@ -35,7 +36,8 @@ library
       TupleSections
   ghc-options: -Wall -Werror -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints
   build-depends:
-      base >=4.7 && <5
+      aeson
+    , base >=4.7 && <5
     , blaze-html
     , blaze-markup
     , bytestring
@@ -66,7 +68,8 @@ executable check-recipes
       TupleSections
   ghc-options: -Wall -Werror -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints
   build-depends:
-      base >=4.7 && <5
+      aeson
+    , base >=4.7 && <5
     , blaze-html
     , blaze-markup
     , bytestring
@@ -98,7 +101,8 @@ executable roux-server
       TupleSections
   ghc-options: -Wall -Werror -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      base >=4.7 && <5
+      aeson
+    , base >=4.7 && <5
     , blaze-html
     , blaze-markup
     , bytestring
@@ -120,6 +124,7 @@ test-suite roux-server-test
   type: exitcode-stdio-1.0
   main-is: Spec.hs
   other-modules:
+      Roux.NYTimesSpec
       Roux.ParserSpec
       Paths_roux_server
   autogen-modules:
@@ -133,7 +138,8 @@ test-suite roux-server-test
       TupleSections
   ghc-options: -Wall -Werror -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints
   build-depends:
-      base >=4.7 && <5
+      aeson
+    , base >=4.7 && <5
     , blaze-html
     , blaze-markup
     , bytestring