Refactor unsafe collections and improve memory handling

Refactored enumerators across multiple unsafe collections to use
`ref` returns for `Current`, improving performance and reducing
memory usage. Enhanced memory management with `AllocationOption`
support and optimized resizing logic for collections like
`UnsafeBitSet`, `UnsafeSlotMap`, and `UnsafeSparseSet`.

Updated `publish-nuget.yaml` to support manual workflow dispatch
and trigger on `push`/`pull_request` events. Incremented project
version to `1.1.2` and ensured NuGet package generation on build.

Misaki.HighPerformance.LowLevel/Collections/Contracts/IUnsafeCollection.cs

@@ -40,6 +40,7 @@ public unsafe interface IUnsafeCollection<T> : IUnsafeCollection, IEnumerable<T>
     /// </summary>
     /// <remarks>This is to adjust the element count of the collection, not the size of the underlying buffer in memory.</remarks>
     /// <param name="newSize">Specifies the new size to which the collection should be adjusted.</param>
+    /// <param name="option">Specifies allocation options that may affect how memory is managed during the resize operation.</param>
     void Resize(int newSize, AllocationOption option);
 }