Move SQL 2019 extension's notebook code into Azure Data Studio (#4090)

extensions/notebook/src/contracts/content.ts

@@ -0,0 +1,66 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+'use strict';
+
+export interface INotebook {
+
+	readonly cells: ICell[];
+	readonly metadata: INotebookMetadata;
+	readonly nbformat: number;
+	readonly nbformat_minor: number;
+}
+
+export interface INotebookMetadata {
+	kernelspec: IKernelInfo;
+	language_info?: ILanguageInfo;
+}
+
+export interface IKernelInfo {
+	name: string;
+	language?: string;
+	display_name?: string;
+}
+
+export interface ILanguageInfo {
+	name: string;
+	version: string;
+	mimetype?: string;
+	codemirror_mode?: string | ICodeMirrorMode;
+}
+
+export interface ICodeMirrorMode {
+	name: string;
+	version: string;
+}
+
+export interface ICell {
+	cell_type: CellType;
+	source: string | string[];
+	metadata: {
+		language?: string;
+	};
+	execution_count: number;
+	outputs?: ICellOutput[];
+}
+
+export type CellType = 'code' | 'markdown' | 'raw';
+
+export class CellTypes {
+	public static readonly Code = 'code';
+	public static readonly Markdown = 'markdown';
+	public static readonly Raw = 'raw';
+}
+
+export interface ICellOutput {
+	output_type: OutputType;
+}
+
+export type OutputType =
+	| 'execute_result'
+	| 'display_data'
+	| 'stream'
+	| 'error'
+	| 'update_display_data';