Is your feature request related to a problem? Please describe.
I like to use both hands when playing

Describe the solution you'd like
I would like the buttons in Auctionator to either 1) Have specific assignable keybinds for each or 2) Have a global "skip confirmation" modifier, like to hold shift while leftclicking the button, or a middleclick instead of leftclick. etc

The usability problem I experience is this: I click the Shopping tab. I need to buy like 200 linen cloth. The UI organizes this list and I do in fact love it.

https://imgur.com/a/zaMHLi6

However, consider that I want to buy a pantsload of linen. My literal process is:

1. Mouseover to top of list
2. Click to select row
3. mouseover to buy button
4. Click, spawning the buy Atr_Buy_Confirm_Frame
5. mouseover to buy stack button
6. click, wait for update (to be very clear, this wait for update is legit and I am not complaining about this speed)
7. spam click repeat step 6 until "none left" is shown
8. mouseover to close
9. click close to despawn the buy stack/close screen

repeat by like 50 times, in order to get the cheapest 200 linen

All the while, my left hand is sitting idly by

I would ask for a better process, either one of two:

1. Mouseover to top of list
2. Hold $MODIFIER_KEY with left hand
3. click to select row with right hand
4. wait for update, as the addon places an order to buyout one stack of whatever i have selected

OR:

1. Mouseover to top of list
2. Click to select row
3. Press $HOTKEY_1 to invoke the buy button and spawn the buy stack/close screen
4. Press $HOTKEY_2 to invoke the Atr_Buy_Confirm_OK button and wait for update

Describe alternatives you've considered
Keybinds are unavailable, although realistically the "bypass confirm" toggle is a real winner IMO

Additional context
Both of my hands are functional! My free hand typed up this issue report faster than my mousing hand took to buy 200 linen (minor hyperbole, or is it?)

Oh another rambling thought too would be to make it so the "ESCAPE" button does not nuke the whole auction UI, and instead would simply close the Atr_Buy_Confirm_Frame

I've added a new option to the buy dialog that should help #1107 (comment)

Comment here to indicate if that is enough to close the issue or if we still need to add a keybinding.

Closing this issue as fixed - the new "Chain buy" element of the buy dialog solves this usecase.