[Feature] Add a new feature that allow user to insert extra solid infills (#10611)

* refactor Infill rotation template

* clean up comments

* set default solid_infill_rotate_template to empty

* Fix an issue that infill_direction solid_infill_direction not working as expected

* Add Extra Solid Infill Feature
Introduced a new feature to insert extra solid infills at specific layers for enhanced strength in 3D prints.

* fix doc error

* fix image name

* support "#K" for Explicit Layer List

* update wiki

src/slic3r/GUI/GUI_Factories.cpp

@@ -108,6 +108,7 @@ std::map<std::string, std::vector<SimpleSettingData>>  SettingsFactory::PART_CAT
                     {"bottom_shell_layers", L("Bottom Solid Layers"),1}, {"bottom_shell_thickness", L("Bottom Minimum Shell Thickness"),1},{"bottom_surface_density", L("Bottom Surface Density"),1},
                     {"sparse_infill_density", "",1},{"sparse_infill_pattern", "",1},{"lateral_lattice_angle_1", "",1},{"lateral_lattice_angle_2", "",1},{"infill_overhang_angle", "",1},{"infill_anchor", "",1},{"infill_anchor_max", "",1},{"top_surface_pattern", "",1},{"bottom_surface_pattern", "",1}, {"internal_solid_infill_pattern", "",1},
                     {"align_infill_direction_to_model", "", 1},
+                    {"extra_solid_infills", "", 1},
         {"infill_combination", "",1}, {"infill_combination_max_layer_height", "",1}, {"infill_wall_overlap", "",1},{"top_bottom_infill_wall_overlap", "",1}, {"solid_infill_direction", "",1}, {"infill_direction", "",1}, {"bridge_angle", "",1}, {"internal_bridge_angle", "",1}, {"minimum_sparse_infill_area", "",1}
                     }},
     { L("Speed"), {{"outer_wall_speed", "",1},{"inner_wall_speed", "",2},{"sparse_infill_speed", "",3},{"top_surface_speed", "",4}, {"internal_solid_infill_speed", "",5},