(Pes) Add ExtendPes, so far only GenNP implemented

src/persian/ExtendPes.gf

@@ -0,0 +1,17 @@
+--# -path=.:../common:../abstract:../prelude
+
+concrete ExtendPes of Extend =
+  CatPes ** ExtendFunctor - [
+    GenNP
+    ]
+  with (Grammar=GrammarPes)
+  ** open Prelude, ResPes in {
+
+lin
+  -- NP -> Quant ; -- this man's
+  GenNP np = np ** { 
+    s = \\num => np.s ! NPC bEzafa ; -- the possessed will get aEzafa, possesser is just unmarked; https://sites.la.utexas.edu/persian_online_resources/language-specific-grammar/ezfe/
+    fromPron = True -- not necessarily from Pron, but it should come after the noun, and if fromPron=True, then DetCN places determiner after cn.
+  } ;
+
+}