Add a proper editor icon

CREDITS.md

@@ -0,0 +1 @@
+Icons made by [Freepik](https://www.flaticon.com/authors/freepik) from [Flaticon](https://www.flaticon.com/).

addons/dialogic/Images/plugin-editor-icon.svg.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="StreamTexture"
+path="res://.import/plugin-editor-icon.svg-b27733904a7899b70bf2e32c6ffbb24b.stex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://addons/dialogic/Images/plugin-editor-icon.svg"
+dest_files=[ "res://.import/plugin-editor-icon.svg-b27733904a7899b70bf2e32c6ffbb24b.stex" ]
+
+[params]
+
+compress/mode=0
+compress/lossy_quality=0.7
+compress/hdr_mode=0
+compress/bptc_ldr=0
+compress/normal_map=0
+flags/repeat=0
+flags/filter=true
+flags/mipmaps=false
+flags/anisotropic=false
+flags/srgb=2
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/HDR_as_SRGB=false
+process/invert_color=false
+stream=false
+size_limit=0
+detect_3d=true
+svg/scale=1.0

addons/dialogic/dialogic.gd

@@ -26,8 +26,7 @@ func make_visible(visible):
 		_editor_view.visible = visible
 
 func get_plugin_icon():
-	# Must return some kind of Texture for the icon.
-	return get_editor_interface().get_base_control().get_icon("Node", "EditorIcons")
+	return preload("res://addons/dialogic/Images/plugin-editor-icon.svg")
 
 func _add_custom_editor_view():
 	_editor_view = preload("res://addons/dialogic/Editor/EditorView.tscn").instance()