Add freecad icon (#21)

* Add freecad icon for files

* Selectable icon

* Empty 'f'

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: martinRenou

src/plugins.ts

@@ -19,6 +19,7 @@ import {
   showErrorMessage,
   WidgetTracker
 } from '@jupyterlab/apputils';
+import { LabIcon } from '@jupyterlab/ui-components';
 
 import { JupyterCadWidgetFactory } from '@jupytercad/jupytercad-core';
 import {
@@ -28,6 +29,12 @@ import {
 } from '@jupytercad/schema';
 import { requestAPI } from '@jupytercad/base';
 import { JupyterCadFCModelFactory } from './modelfactory';
+import freecadIconSvg from '../style/freecad.svg';
+
+const freecadIcon = new LabIcon({
+  name: 'jupytercad:stp',
+  svgstr: freecadIconSvg
+});
 
 const FACTORY = 'Jupytercad Freecad Factory';
 
@@ -84,7 +91,8 @@ const activate = async (
     mimeTypes: ['application/octet-stream'],
     extensions: ['.FCStd', 'fcstd'],
     fileFormat: 'base64',
-    contentType: 'FCStd'
+    contentType: 'FCStd',
+    icon: freecadIcon
   });
 
   const FCStdSharedModelFactory: SharedDocumentFactory = () => {
@@ -96,6 +104,7 @@ const activate = async (
   );
 
   widgetFactory.widgetCreated.connect((sender, widget) => {
+    widget.title.icon = freecadIcon;
     // Notify the instance tracker if restore data needs to update.
     widget.context.pathChanged.connect(() => {
       tracker.save(widget);

src/svg.d.ts

@@ -0,0 +1,4 @@
+declare module '*.svg' {
+  const value: string; // @ts-ignore
+  export default value;
+}