Switch to using GWCA's GetBagByIndex for safer bag pointer access; Add dye tint support to inventory item model

[brendan-mccoy]

Addresses #1489

Poking around GWCA, I encountered GWCA.GW.Items.GetBagByIndex and put that in. I'm not sure if that's the preferred solution since I'm still learning. It seems to be working.

I also found the dye_tint I also need for my effort collecting info for toolbox armory values, which I slipped in.

[AlexMacocian]

Are you able to build this locally?

[AlexMacocian]

Overall I'm fine with these changes.
But try to build your branch and see if it stops the exception.

You can use the publish scripts under Scripts/ folder to build everything.

You'll need PublishWindowsX86.ps1 to build the injector and API stuff under Publish folder.

Then you'll need PublishWindows.ps1 to build the rest of the windows launcher files and the exe.

Then just launch Daybreak.exe from Publish directory

[brendan-mccoy]

Yes, I've been building and testing anything before I submit a PR, using the publish scripts. Testing the inventory API, its behavior matched what my consuming use case was expecting and it was no longer throwing any exceptions in the debugger nor the 500 errors.

[AlexMacocian]

Approved