Add support for creating editor icons per module

The functionality is similar to how `doc_classes` are retrieved per module.
The build system will search for custom icons path defined per module via
`get_icons_path()` method in `config.py` or default icons path.
If such paths don't exist, only the editor's own icons will be built.

Most module icons were moved from editor/icons to respective modules.

16 files changed, 23 insertions, 5 deletions

diff --git a/SConstruct b/SConstruct
index a619ea0797..c2524a4a4d 100644
--- a/SConstruct
+++ b/SConstruct
@@ -399,6 +399,7 @@ if selected_platform in platform_list:
     sys.modules.pop('detect')
 
     env.module_list = []
+    env.module_icons_paths = []
     env.doc_class_path = {}
 
     for x in module_list:
@@ -421,13 +422,22 @@ if selected_platform in platform_list:
         if (can_build):
             config.configure(env)
             env.module_list.append(x)
+            
+            # Get doc classes paths (if present)
             try:
-                 doc_classes = config.get_doc_classes()
-                 doc_path = config.get_doc_path()
-                 for c in doc_classes:
-                     env.doc_class_path[c] = "modules/" + x + "/" + doc_path
+                doc_classes = config.get_doc_classes()
+                doc_path = config.get_doc_path()
+                for c in doc_classes:
+                    env.doc_class_path[c] = "modules/" + x + "/" + doc_path
             except:
                 pass
+            # Get icon paths (if present)
+            try:
+                icons_path = config.get_icons_path()
+                env.module_icons_paths.append("modules/" + x + "/" + icons_path)
+            except:
+                # Default path for module icons
+                env.module_icons_paths.append("modules/" + x + "/" + "icons")
 
         sys.path.remove(tmppath)
         sys.modules.pop('config')
diff --git a/editor/icons/SCsub b/editor/icons/SCsub
index 109e1aa83b..b39c74c66a 100644
--- a/editor/icons/SCsub
+++ b/editor/icons/SCsub
@@ -10,4 +10,12 @@ make_editor_icons_builder = Builder(action=run_in_subprocess(editor_icons_builde
                                     src_suffix='.svg')
 
 env['BUILDERS']['MakeEditorIconsBuilder'] = make_editor_icons_builder
-env.Alias('editor_icons', [env.MakeEditorIconsBuilder('#editor/editor_icons.gen.h', Glob("*.svg"))])
+
+# Editor's own icons
+icon_sources = Glob("*.svg")
+
+# Module icons
+for module_icons in env.module_icons_paths:
+    icon_sources += Glob('#' + module_icons + "/*.svg")
+
+env.Alias('editor_icons', [env.MakeEditorIconsBuilder('#editor/editor_icons.gen.h', icon_sources)])
diff --git a/editor/icons/icon_c_s_g_box.svg b/modules/csg/icons/icon_c_s_g_box.svg
index 67e34df444..67e34df444 100644
--- a/editor/icons/icon_c_s_g_box.svg
+++ b/modules/csg/icons/icon_c_s_g_box.svg
diff --git a/editor/icons/icon_c_s_g_capsule.svg b/modules/csg/icons/icon_c_s_g_capsule.svg
index 92a7b5a870..92a7b5a870 100644
--- a/editor/icons/icon_c_s_g_capsule.svg
+++ b/modules/csg/icons/icon_c_s_g_capsule.svg
diff --git a/editor/icons/icon_c_s_g_combiner.svg b/modules/csg/icons/icon_c_s_g_combiner.svg
index cce2902e24..cce2902e24 100644
--- a/editor/icons/icon_c_s_g_combiner.svg
+++ b/modules/csg/icons/icon_c_s_g_combiner.svg
diff --git a/editor/icons/icon_c_s_g_cylinder.svg b/modules/csg/icons/icon_c_s_g_cylinder.svg
index 645a74c79b..645a74c79b 100644
--- a/editor/icons/icon_c_s_g_cylinder.svg
+++ b/modules/csg/icons/icon_c_s_g_cylinder.svg
diff --git a/editor/icons/icon_c_s_g_mesh.svg b/modules/csg/icons/icon_c_s_g_mesh.svg
index 6e940a4aa5..6e940a4aa5 100644
--- a/editor/icons/icon_c_s_g_mesh.svg
+++ b/modules/csg/icons/icon_c_s_g_mesh.svg
diff --git a/editor/icons/icon_c_s_g_polygon.svg b/modules/csg/icons/icon_c_s_g_polygon.svg
index 71b03cb8e6..71b03cb8e6 100644
--- a/editor/icons/icon_c_s_g_polygon.svg
+++ b/modules/csg/icons/icon_c_s_g_polygon.svg
diff --git a/editor/icons/icon_c_s_g_sphere.svg b/modules/csg/icons/icon_c_s_g_sphere.svg
index f81b566993..f81b566993 100644
--- a/editor/icons/icon_c_s_g_sphere.svg
+++ b/modules/csg/icons/icon_c_s_g_sphere.svg
diff --git a/editor/icons/icon_c_s_g_torus.svg b/modules/csg/icons/icon_c_s_g_torus.svg
index 3d30aa47b2..3d30aa47b2 100644
--- a/editor/icons/icon_c_s_g_torus.svg
+++ b/modules/csg/icons/icon_c_s_g_torus.svg
diff --git a/editor/icons/icon_g_d_native_library.svg b/modules/gdnative/icons/icon_g_d_native_library.svg
index b494c7af6e..b494c7af6e 100644
--- a/editor/icons/icon_g_d_native_library.svg
+++ b/modules/gdnative/icons/icon_g_d_native_library.svg
diff --git a/editor/icons/icon_native_script.svg b/modules/gdnative/icons/icon_native_script.svg
index fb9e135627..fb9e135627 100644
--- a/editor/icons/icon_native_script.svg
+++ b/modules/gdnative/icons/icon_native_script.svg
diff --git a/editor/icons/icon_g_d_script.svg b/modules/gdscript/icons/icon_g_d_script.svg
index 953bb9ae9e..953bb9ae9e 100644
--- a/editor/icons/icon_g_d_script.svg
+++ b/modules/gdscript/icons/icon_g_d_script.svg
diff --git a/editor/icons/icon_grid_map.svg b/modules/gridmap/icons/icon_grid_map.svg
index eafe1211f2..eafe1211f2 100644
--- a/editor/icons/icon_grid_map.svg
+++ b/modules/gridmap/icons/icon_grid_map.svg
diff --git a/editor/icons/icon_noise_texture.svg b/modules/opensimplex/icons/icon_noise_texture.svg
index 5908c2b2d4..5908c2b2d4 100644
--- a/editor/icons/icon_noise_texture.svg
+++ b/modules/opensimplex/icons/icon_noise_texture.svg
diff --git a/editor/icons/icon_visual_script.svg b/modules/visual_script/icons/icon_visual_script.svg
index f6475d590e..f6475d590e 100644
--- a/editor/icons/icon_visual_script.svg
+++ b/modules/visual_script/icons/icon_visual_script.svg