Add disable use light in file checker

1.9.1

- fix: add error handling on palette linker when blend_path isn't valid anymore
- added: file checker entry, Disable all GP object `use lights` (True by default in addon pref `checklist`)
- added: WIP of Batch reproject all on cursor.
  - No UI. In search menu `Flat Reproject Selected On cursor` (idname `gp.batch_flat_reproject`)

__init__.py

@@ -15,7 +15,7 @@ bl_info = {
 "name": "GP toolbox",
 "description": "Tool set for Grease Pencil in animation production",
 "author": "Samuel Bernou, Christophe Seux",
-"version": (1, 9, 0),
+"version": (1, 9, 1),
 "blender": (2, 91, 0),
 "location": "Sidebar (N menu) > Gpencil > Toolbox / Gpencil properties",
 "warning": "",
@@ -47,6 +47,7 @@ from . import OP_brushes
 from . import OP_file_checker
 from . import OP_copy_paste
 from . import OP_realign
+from . import OP_flat_reproject
 from . import OP_depth_move
 from . import OP_key_duplicate_send
 from . import OP_layer_manager
@@ -574,6 +575,7 @@ class GPTB_prefs(bpy.types.AddonPreferences):
             col.prop(self.fixprops, 'set_slider_n_sync')
             col.prop(self.fixprops, 'check_front_axis')
             col.prop(self.fixprops, 'check_placement')
+            col.prop(self.fixprops, 'set_gp_use_lights_off')
             col.prop(self.fixprops, 'set_pivot_median_point')
             col.prop(self.fixprops, 'disable_guide')
             col.prop(self.fixprops, 'list_disabled_anim')
@@ -686,6 +688,7 @@ def register():
     OP_brushes.register()
     OP_cursor_snap_canvas.register()
     OP_copy_paste.register()
+    OP_flat_reproject.register()
     OP_realign.register()
     OP_depth_move.register()
     OP_key_duplicate_send.register()
@@ -728,6 +731,7 @@ def unregister():
     OP_key_duplicate_send.unregister()
     OP_depth_move.unregister()
     OP_realign.unregister()
+    OP_flat_reproject.unregister()
     OP_copy_paste.unregister()
     OP_cursor_snap_canvas.unregister()
     OP_brushes.unregister()