Add DLC cookbook Inventory and Event Flags

[groobybugs]

Hi everyone,

First, I'd like to extend my thanks to @ClayAmore for his outstanding work on this useful tool. This pull request aims to add the DLC cookbooks. I understand this contribution might not be directly integrated, but I hope it can assist others in adding the DLC cookbooks themselves.

For this addition, I used the latest Hexinton table and the resources from The-Grand-Archives/Elden-Ring-CT-TGA as references. Specifically, I attempted to add the "Forager Brood Cookbook [2]" to my PS4 save. However, I encountered an issue where adding it caused almost all items in my inventory to disappear, although the items in the chest remained unaffected. The same problem occurred when I tried adding non-DLC cookbooks. This might be related to the save game being from a PS4.

Interestingly, adding any other item to the inventory does not cause this issue, and the other items remain intact. If anyone with more knowledge on this matter could provide some advice or insight into why this happens, I would greatly appreciate it.

Thank you!