added jshell context in the editor context

Author: Achal1607

vscode/package.json

@@ -636,6 +636,11 @@
 					"command": "jdk.project.debug",
 					"when": "nbJdkReady && editorLangId == java && resourceExtname == .java",
 					"group": "javadebug@2"
+				},
+				{
+					"command": "jdk.jshell.project",
+					"when": "nbJdkReady && editorLangId == java && resourceExtname == .java",
+					"group": "javadebug@3"
 				}
 			],
 			"explorer/context": [
@@ -663,6 +668,11 @@
 					"command": "jdk.project.debug",
 					"when": "nbJdkReady && resourceExtname == .java",
 					"group": "javadebug@2"
+				},
+				{
+					"command": "jdk.jshell.project",
+					"when": "nbJdkReady && resourceExtname == .java",
+					"group": "javadebug@3"
 				}
 			],
 			"commandPalette": [

vscode/src/commands/notebook.ts

@@ -12,7 +12,7 @@ import { getContextUri, isNbCommandRegistered } from './utils';
 import { l10n } from '../localiser';
 import { extConstants } from '../constants';
 import { Notebook } from '../notebooks/notebook';
-import { ICell, ICodeCell } from '../notebooks/types';
+import { ICodeCell } from '../notebooks/types';
 import { randomUUID } from 'crypto';
 
 const createNewNotebook = async (ctx?: any) => {
@@ -94,7 +94,7 @@ const createNewNotebook = async (ctx?: any) => {
             execution_count: null,
             outputs: [],
             id: randomUUID(),
-            metadata: undefined,
+            metadata: {},
             source: ''
         };