Add sample Notebook provider (#17988)

samples/sample-notebook-provider/package.json

@@ -0,0 +1,54 @@
+{
+  "name": "sample-notebook-provider",
+  "displayName": "%extension-display-name%",
+  "description": "%extension-description%",
+  "version": "0.0.1",
+  "publisher": "Microsoft",
+  "preview": true,
+  "license": "https://raw.githubusercontent.com/Microsoft/azuredatastudio/main/LICENSE.txt",
+  "icon": "images/sqlserver.png",
+  "engines": {
+    "vscode": "*",
+    "azdata": ">=1.34.0"
+  },
+	"categories": [
+		"Other"
+	],
+	"activationEvents": [
+		"*"
+	],
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Microsoft/azuredatastudio.git"
+  },
+  "extensionDependencies": [
+    "microsoft.notebook"
+  ],
+  "main": "./out/extension",
+  "scripts": {
+    "compile": "node node_modules/typescript/bin/tsc -p ./tsconfig.json",
+    "watch": "node node_modules/typescript/bin/tsc --watch -p ./tsconfig.json"
+  },
+  "contributes": {
+    "notebooks": [
+      {
+        "id": "my-notebook",
+        "type": "my-notebook",
+        "displayName": "My Custom Notebook",
+        "selector": [
+          {
+          "filenamePattern": "*.mynotebook"
+          }
+        ]
+      }
+    ]
+  },
+  "dependencies": {
+  },
+  "devDependencies": {
+    "@types/azdata": "^1.34.0",
+    "@types/vscode": "^1.61.0",
+    "@types/node": "14.x",
+    "typescript": "^4.4.0-dev.20210607"
+  }
+}