Layer actions and navigations features

1.9.0

- feat: New shortcuts:
  - `F2` in Paint and Edit to rename active layer
  - `Insert` add a new layer (same as Krita)
  - `Shift + Insert` add a new layer and immediately pop-up a rename box
  - `page up / page down` change active layer up/down with a temporary fade (settings in addon prefs)
- fix: error when tweaking `gp.duplicate_send_to_layer` shortcut

keymaps.py

@@ -8,6 +8,8 @@ def register_keymaps():
     # km = addon.keymaps.new(name = "3D View", space_type = "VIEW_3D")# in 3D context
     # km = addon.keymaps.new(name = "Window", space_type = "EMPTY")# from everywhere
     
+
+    ## Sculpt mode toggles
     km = addon.keymaps.new(name = "Grease Pencil Stroke Sculpt Mode", space_type = "EMPTY", region_type='WINDOW')
 
     kmi = km.keymap_items.new('wm.context_toggle', type='ONE', value='PRESS')
@@ -22,6 +24,12 @@ def register_keymaps():
     kmi.properties.data_path='scene.tool_settings.use_gpencil_select_mask_segment'
     addon_keymaps.append((km, kmi))
 
+    ## T temp cutter (need disabling of native T shortcut, maybe expose a button to set the shortcut as user ?)
+    # km = addon.keymaps.new(name = "Grease Pencil", space_type = "EMPTY")
+    # kmi = km.keymap_items.new('gpencil.stroke_cutter', type='LEFTMOUSE', value='PRESS', key_modifier='T')
+    # kmi.properties.flat_caps=False
+    # addon_keymaps.append((km, kmi))
+
 def unregister_keymaps():
     for km, kmi in addon_keymaps:
         km.keymap_items.remove(kmi)