fix(data/smartphone): set base_model_slug for wnd 2007 phones

Author: Seungpyo1007

data/smartphone/wnd/2007/wind-duo-2000.json

@@ -1,5 +1,6 @@
 {
   "slug": "wind-duo-2000",
+  "base_model_slug": "wind-duo-2000",
   "name": "Wind DUO 2000",
   "brand": "wnd",
   "soc": "wnd-mobile-platform-2007",

data/smartphone/wnd/2007/wind-duo-2100.json

@@ -1,5 +1,6 @@
 {
   "slug": "wind-duo-2100",
+  "base_model_slug": "wind-duo-2100",
   "name": "Wind DUO 2100",
   "brand": "wnd",
   "soc": "wnd-mobile-platform-2007",

data/smartphone/wnd/2007/wind-duo-2200.json

@@ -1,5 +1,6 @@
 {
   "slug": "wind-duo-2200",
+  "base_model_slug": "wind-duo-2200",
   "name": "Wind DUO 2200",
   "brand": "wnd",
   "soc": "wnd-mobile-platform-2007",

data/smartphone/wnd/2007/wind-duo-2300.json

@@ -1,5 +1,6 @@
 {
   "slug": "wind-duo-2300",
+  "base_model_slug": "wind-duo-2300",
   "name": "Wind DUO 2300",
   "brand": "wnd",
   "soc": "wnd-mobile-platform-2007",

data/smartphone/wnd/2007/wind-van-gogh-2100.json

@@ -1,5 +1,6 @@
 {
   "slug": "wind-van-gogh-2100",
+  "base_model_slug": "wind-van-gogh-2100",
   "name": "Wind Van Gogh 2100",
   "brand": "wnd",
   "soc": "wnd-mobile-platform-2007",