Transfer code (#1)

* copy project root files

* import previously created code and rename where needed

* fix license and lint

* main is now just a JS wrapper

* minified main.cjs rather than copying to a newly named file

lib/parser.mly

@@ -0,0 +1,35 @@
+%{
+  open Ast
+%}
+
+%token TAG_OPEN TAG_CLOSE LPAREN RPAREN EOF
+%token <string> HEADER STRING MOVE NUMBER COMMENT RESULT CLOCK NAG
+
+%start <Ast.game> main
+
+%%
+
+main:
+  | ts = tags; c = content; r = option(RESULT); EOF 
+    { { tags = ts; content = c; result = r } }
+
+tags:
+  | TAG_OPEN; k = HEADER; v = STRING; TAG_CLOSE; rest = tags 
+    { { key = k; value = v } :: rest }
+  | (* empty *)
+    { [] }
+
+content:
+  | i = item; rest = content 
+    { i :: rest }
+  | (* empty *)
+    { [] }
+
+item:
+  | m = MOVE   { Move m }
+  | n = NUMBER { Number n }
+  | c = CLOCK  { Clock c }
+  | g = NAG    { Nag g }
+  | c = COMMENT { Comment c }
+  | r = RESULT  { Result r }
+  | LPAREN; v = content; RPAREN { Variation v }