feat: move additional staging helpers to stage extension

Author: hoffstadt-nasa

docs/changelog.txt

@@ -5,6 +5,7 @@
 Below is the change log for typical users. Minor and older changes stripped
 away, please see git history for details.
 
+- v0.10.1 (XXXX-XX-XX)
 - v0.10.0 (2026-06-16)(graphics  v2.0.0)  -major version update requires Metal 4.0 & Vulkan 1.4 support
                                           -moved from renderpasses to dynamic rendering
                                           -removed explicit image layouts

docs/version.txt

@@ -1,4 +1,4 @@
-v0.10.0
+v0.10.1 WIP
 
 -----------------------------------------------------------------------------
                              Versioning
@@ -105,7 +105,7 @@ the API is complete. It just means we won't break what currently exists.
 * Material            v0.1.0 (pl_material_ext.h)
 * Terrain             v0.1.0 (pl_terrain_ext.h)
 * Free List           v0.1.0 (pl_freelist_ext.h)
-* Image Ops           v0.1.0 (pl_image_ops_ext.h)
+* Image Ops           v0.2.0 (pl_image_ops_ext.h)
 * Stage               v0.2.0 (pl_stage_ext.h)
 * Renderer            v0.3.0 (pl_renderer_ext.h)
 * Renderer Terrain    v0.1.0 (pl_renderer_ext.h)

extensions/pl_graphics_ext.h

@@ -302,7 +302,7 @@ typedef enum VkFormat VkFormat;
 #endif
 
 //-----------------------------------------------------------------------------
-// [SECTION] declared structs (for C++)
+// [SECTION] pre-declared structs (for C++)
 //-----------------------------------------------------------------------------
 
 typedef struct _plDynamicDataBlock