Add 'New JupyterGIS file' option to context menu (#800)

* Add 'New JupyterGIS file' option to context menu

* lint

* Apply suggestions from code review

* update test

Author: arjxn-py

python/jupytergis_core/src/jgisplugin/plugins.ts

@@ -151,7 +151,7 @@ const activate = async (
   });
 
   app.commands.addCommand(CommandIDs.createNew, {
-    label: args => 'GIS File',
+    label: args => (args['label'] as string) ?? 'GIS Project',
     caption: 'Create a new JGIS Editor',
     icon: args => logoIcon,
     execute: async args => {
@@ -238,6 +238,14 @@ const activate = async (
       });
     }
   }
+
+  // Inject “New JupyterGIS file” into the File Browser context menu
+  app.contextMenu.addItem({
+    command: CommandIDs.createNew,
+    selector: '.jp-DirListing',
+    rank: 55,
+    args: { label: 'New JupyterGIS Project' },
+  });
 };
 
 const jGISPlugin: JupyterFrontEndPlugin<void> = {

ui-tests/tests/new-file.spec.ts

@@ -6,7 +6,7 @@ test.describe('#newFile', () => {
   });
 
   test('New file should open with no errors', async ({ page }) => {
-    await page.getByLabel('notebook content').getByText('GIS File').click();
+    await page.getByLabel('notebook content').getByText('GIS Project').click();
 
     const tab = page.getByLabel('notebook content');
     const layers = page.getByText('Layers', { exact: true });