Stardew Valley: Add money logic to traveling merchant (#5327)

* add rule to traveling merchant region

* add a test so kaito is happy

worlds/stardew_valley/test/rules/TestTravelingMerchant.py

@@ -0,0 +1,23 @@
+from ..bases import SVTestBase
+from ...locations import location_table, LocationTags
+
+
+class TestTravelingMerchant(SVTestBase):
+
+    def test_purchase_from_traveling_merchant_requires_money(self):
+        traveling_merchant_location_names = [l for l in self.get_real_location_names() if LocationTags.TRAVELING_MERCHANT in location_table[l].tags]
+
+        for traveling_merchant_day in ["Traveling Merchant: Sunday", "Traveling Merchant: Monday", "Traveling Merchant: Tuesday",
+                                       "Traveling Merchant: Wednesday", "Traveling Merchant: Thursday", "Traveling Merchant: Friday",
+                                       "Traveling Merchant: Saturday"]:
+            self.collect(traveling_merchant_day)
+
+        for location_name in traveling_merchant_location_names:
+            location = self.multiworld.get_location(location_name, 1)
+            self.assert_cannot_reach_location(location, self.multiworld.state)
+
+        self.collect("Shipping Bin")
+
+        for location_name in traveling_merchant_location_names:
+            location = self.multiworld.get_location(location_name, 1)
+            self.assert_can_reach_location(location, self.multiworld.state)