getting more database stuff hooked up

src/critter.hpp

@@ -31,4 +31,16 @@ class Critter {
         int father_id;
         std::string gender;
         std::string species;
+
+        Critter() = default;
+
+        Critter(int id, std::string name, std::string gender, int mother_id, int father_id, std::string notes, std::string species) :
+            id(id), name(std::move(name)), gender(std::move(gender)),
+            mother_id(mother_id), father_id(father_id), 
+            notes(std::move(notes)), species(std::move(species)) {}
+};
+
+struct CritterEntry {
+    int key;
+    Critter value;
 };