Skill gem crafting: improved stash and inventory access usability

TLDR: To help in crafting might the Skills screen access both the inventory and, when adjacent, the personal stash.

My current crafting process (using Xbox controller on PC) has me moving back and forth between my stash, inventory and skill screen. If I forget or miss something then I have to re-open the stash and transfer more into my inventory, before coming back to the skill gem screen.

My usual use cases at the moment are:
* Crafting new gems and supports
* Improving quality
* Finding and retrieving previously crafted gems/supports
* Theory crafting from tooltips
* Theory crafting from equipment that is in-use/stashed

Standing next to your personal stash would make it available as an alternative panel that replaces your inventory. This would remove much of the screen swapping. I've suggested the right-trigger for the Xbox controller, and an equivalent PC keybind would also be needed.

As an added bonus then accessing the guild stash while adjacent to that would be beneficial, though as a shared resource this could well be much more involved to implement!

If somebody has any suggestions on how to improve the crafting process in the meantime, I'd love to hear (I'm already aware of the external planner sites).

Thanks!