Pass cell metadata and cell id as metadata for execute_request (#13288)

* Expose cell metadata
* pass cell metadata as the metadata for execute request,
* add cellId to cell metadata when cell is generated

* don't add the metadata, avoids messing up the file

* news entry

* reword news entry

* JSONObject -> Record<string, any>

Author: stisa

news/1 Enhancements/13252.md

@@ -0,0 +1,2 @@
+Cell id and cell metadata are now passed as the metadata field for execute_request messages.
+(thanks [stisa](https://github.com/stisa/))

src/client/datascience/jupyter/jupyterNotebook.ts

@@ -859,7 +859,9 @@ export class JupyterNotebookBase implements INotebook {
 
     private generateRequest = (
         code: string,
-        silent?: boolean
+        silent?: boolean,
+        // tslint:disable-next-line: no-any
+        metadata?: Record<string, any>
     ): Kernel.IShellFuture<KernelMessage.IExecuteRequestMsg, KernelMessage.IExecuteReplyMsg> | undefined => {
         //traceInfo(`Executing code in jupyter : ${code}`);
         try {
@@ -873,7 +875,8 @@ export class JupyterNotebookBase implements INotebook {
                           allow_stdin: true, // Allow when silent too in case runStartupCommands asks for a password
                           store_history: !silent // Silent actually means don't output anything. Store_history is what affects execution_count
                       },
-                      silent // Dispose only silent futures. Otherwise update_display_data doesn't finda future for a previous cell.
+                      silent, // Dispose only silent futures. Otherwise update_display_data doesn't find a future for a previous cell.
+                      metadata
                   )
                 : undefined;
         } catch (exc) {
@@ -1098,7 +1101,10 @@ export class JupyterNotebookBase implements INotebook {
                 subscriber.error(this.sessionStartTime, exitError);
                 subscriber.complete(this.sessionStartTime);
             } else {
-                const request = this.generateRequest(concatMultilineStringInput(subscriber.cell.data.source), silent);
+                const request = this.generateRequest(concatMultilineStringInput(subscriber.cell.data.source), silent, {
+                    ...subscriber.cell.data.metadata,
+                    ...{ cellId: subscriber.cell.id }
+                });
 
                 // Transition to the busy stage
                 subscriber.cell.state = CellState.executing;