feat(farming): created exampled database

automate_farming/farming_db.lua

@@ -0,0 +1,8 @@
+return {
+    ["Wheat Farming 01"] = {
+        field = {
+            vector.new(0.1, 0.1, 0.1), vector.new(0.2, 0.2, 0.2)
+        },
+        refuel_station = vector.new(0, 0, 0)
+    }
+}