Added the F# programming language (#2978) devrusty

* Update _list.json

* created code_fsharp.json

* added code_fsharp

* removed extra comma

frontend/static/languages/_groups.json

@@ -311,7 +311,7 @@
       "code_c++",
       "code_dart",
       "code_brainfck",
-      
+      "code_fsharp",
       "code_javascript",
       "code_javascript_1k",
       "code_html",

frontend/static/languages/_list.json

@@ -159,6 +159,7 @@
   ,"git"
   ,"pig_latin"
   ,"code_python"
+  ,"code_fsharp"
   ,"code_c"
   ,"code_csharp"
   ,"code_css"

frontend/static/languages/code_fsharp.json

@@ -0,0 +1,88 @@
+{
+  "name": "code_fsharp",
+  "leftToRight": true,
+  "words": [
+    "abstract",
+    "and",
+    "as",
+    "assert",
+    "base",
+    "begin",
+    "break",
+    "checked",
+    "class",
+    "component",
+    "constraint",
+    "continue",
+    "default",
+    "delegate",
+    "do",
+    "done",
+    "downcast",
+    "downto",
+    "elif",
+    "else",
+    "end",
+    "event",
+    "exception",
+    "external",
+    "extern",
+    "false",
+    "finally",
+    "fixed",
+    "for",
+    "fun",
+    "function",
+    "global",
+    "if",
+    "in",
+    "include",
+    "inherit",
+    "inline",
+    "interface",
+    "lazy",
+    "let",
+    "match",
+    "member",
+    "mixin",
+    "module",
+    "mutable",
+    "namespace",
+    "new",
+    "not",
+    "null",
+    "of",
+    "open",
+    "or",
+    "override",
+    "parallel",
+    "private",
+    "process",
+    "protected",
+    "public",
+    "pure",
+    "rec",
+    "return",
+    "sealed",
+    "select",
+    "static",
+    "struct",
+    "tailcall",
+    "then",
+    "to",
+    "trait",
+    "true",
+    "try",
+    "type",
+    "upcast",
+    "use",
+    "val",
+    "virtual",
+    "void",
+    "when",
+    "while",
+    "with",
+    "yield",
+    "const"
+  ]
+}