add learning tracks schema

Author: sarahs

tests/helpers/schemas/learning-tracks-schema.js

@@ -0,0 +1,29 @@
+module.exports = {
+  properties: {
+    type: 'object',
+    additionalProperties: false,
+    patternProperties: {
+      '^[a-zA-Z-_]+$': {
+        type: 'object',
+        properties: {
+          title: {
+            type: 'string',
+            required: true
+          },
+          description: {
+            type: 'string',
+            required: true
+          },
+          guides: {
+            type: 'array',
+            items: { type: 'string' },
+            required: true
+          },
+          featured_track: {
+            type: 'boolean'
+          }
+        }
+      }
+    }
+  }
+}