fix(core): Properly release memory when stopping emulation

Signed-off-by: Collecting <collecting@noreply.localhost>

src/video_core/vulkan_common/vulkan_memory_allocator.h

@@ -124,6 +124,8 @@ public:
     /// Commits memory required by the buffer and binds it.
     MemoryCommit Commit(const vk::Buffer& buffer, MemoryUsage usage);
 
+    void NukeAllAllocations();
+
 private:
     /// Tries to allocate a chunk of memory.
     bool TryAllocMemory(VkMemoryPropertyFlags flags, u32 type_mask, u64 size);