feat(GraphEngine): More robust reaction type selection at network construction

Added new ways to select exactly what types of reactions (strong, beta+, beta-, electron capture, positron capture, or any combination thereof) can be turned on at network construction time. There are a few quality of life masks added as well such as weak which addes all weak type reactions, and all which adds weak + strong reactions. The default is to just add strong reactions for now.

src/include/gridfire/reaction/reaction.h

@@ -779,6 +779,8 @@ namespace gridfire::reaction {
 
         void add_reaction(std::unique_ptr<Reaction>&& reaction);
 
+        void extend(const ReactionSet& other);
+
         /**
          * @brief Removes a reaction from the set.
          * @param reaction The Reaction to remove.