Add missing icons

(transplanted from 002a971a0a39530681a67cf24f03253339c419f0)

setup.py

@@ -31,10 +31,12 @@ setup(name='trytond_product',
     packages=[
         'trytond.modules.product',
         'trytond.modules.product.tests',
+        'trytond.modules.product.icons',
     ],
     package_data={
         'trytond.modules.product': info.get('xml', []) \
                 + info.get('translation', []),
+        'trytond.modules.product.icons': ['tryton-product.svg'],
     },
     classifiers=[
         'Development Status :: 5 - Production/Stable',