Add keybind for cycling grid type

[OliBomby]

Requires:

• Add ability to change position, spacing, and rotation of the positional snap grid in the editor #26309
• Add hexgrid and circular grid to the osu editor #26310
• Make editor flip, rotate, and scale tools revolve around the grid center #26311
• Add grid placement tool #26313

Using the tool boxes on the right frequently is quite annoying, so I also added a keybind for cycling the grid type (H). I chose this key because its right next to the grid spacing cycle hotkey (G) and unused. It makes sense to group the grid property changing hotkeys physically close on the keyboard. An alternative hotkey could be like Shift+G or Shift+G, Ctrl+G is taken.

There's also a test for the grid placement tool in here which apparently got left behind when I was splitting up this PR into parts. I guess it can't hurt to have it so here it is.

2023-12-31.21-07-56.mp4

[bdach]

1.3k line diffstat moves this even lower on review priority list than it already was.

Did everything here need to be in a single pull?

[OliBomby]

Right I forgot to split it up to make review more palatable.

[bdach]

What's with the history here?

Please force-push that away because whatever that diffstat is, it's not worth 50 commits. If you chain PRs correctly the commits from previous PRs in the chain should go away when merging master into PRs later down the chain; and here it appears they didn't. So I'd rather this was fixed up, even if by squashing, because I don't want to see all that stuff in blame.

[OliBomby]

I'm struggling with git here to fix this history

[peppy]

I dunno what's going on with the new commits but this should be fixed by squashing down to a single commit.

[OliBomby]

Ok its fixed

[peppy]

I guess cycling is okay and saves on used hotkeys, but I'd bet the first thing we get asked for next is per-grid hotkeys rather than a cycle. Any thoughts on this?

[OliBomby]

idk per-grid hotkeys seems overkill for something with 3 options because you're only ever at most 2 keypresses away from the grid type you want with cycling

[peppy]

I've pushed some changes and fixes. @OliBomby please confirm you're okay with them.

Importantly, you have to make sure to add new bindings to the end of the enum, else it offsets game bindings game-wide and breaks everything (see b62d9f8).

[peppy]

this generic test logic is shoddy. a failure results in invalid operation exception on a linq call. tests should fail on the asserts, not random link.

[OliBomby]

I've added an assert to explicitly assert the specific grid type. Now it should fail on the assert if it has the wrong grid type.