Stack System Cleanup (#38872)

* eye on the prize

* OnStackInteractUsing, TryMergeStacks, TryMergeToHands, TryMergeToContacts

* namespace

* Use, get count, getMaxCount

* component access

* add regions, mark TODO

* obsolete TryAdd, public TryMergeStacks

* GetMaxCount

* event handlers

* event handlers

* SetCount

* client server event handlers

* move to shared

* Revert "move to shared"

This reverts commit 45540a2d6b8e1e6d2a8f83a584267776c7edcd73.

* misc changes to shared

* split

* spawn and SpawnNextToOrDrop

* SpawnMultipleAtPosition, SpawnMultipleNextToOrDrop, CalculateSpawns, general server cleanup

* Rename Use to TryUse.

* Small misc changes

* Remove obsolete functions

* Remove some SetCount calls

* Partialize

* small misc change

* don't nuke the git dif with the namespace block

* Comments and reordering

* touchup to UpdateLingering

* Summary comment for StackStatusControl

* Last pass

* Actual last pass (for now)

* I know myself too well

* fixup

* goodbye lingering

* fixes

* review

* fix test

* second look

* fix test

* forgot

* remove early comp getting

---------

Co-authored-by: iaada <iaada@users.noreply.github.com>
Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>

Content.Server/Administration/Systems/AdminVerbSystem.Tools.cs

@@ -417,7 +417,7 @@ public sealed partial class AdminVerbSystem
                     // Unbounded intentionally.
                     _quickDialog.OpenDialog(player, Loc.GetString("admin-verbs-adjust-stack"), Loc.GetString("admin-verbs-dialog-adjust-stack-amount", ("max", _stackSystem.GetMaxCount(stack))), (int newAmount) =>
                     {
-                        _stackSystem.SetCount(args.Target, newAmount, stack);
+                        _stackSystem.SetCount((args.Target, stack), newAmount);
                     });
                 },
                 Impact = LogImpact.Medium,
@@ -433,7 +433,7 @@ public sealed partial class AdminVerbSystem
                 Icon = new SpriteSpecifier.Texture(new("/Textures/Interface/AdminActions/fill-stack.png")),
                 Act = () =>
                 {
-                    _stackSystem.SetCount(args.Target, _stackSystem.GetMaxCount(stack), stack);
+                    _stackSystem.SetCount((args.Target, stack), _stackSystem.GetMaxCount(stack));
                 },
                 Impact = LogImpact.Medium,
                 Message = Loc.GetString("admin-trick-fill-stack-description"),