lingo: start as a standalone module

Lingo was started as a standalone module and the commits where later crafted
onto the combo repository.

combo/apps/lingo/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

combo/apps/lingo/models.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

combo/apps/lingo/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.