show more detailed info next to progress bars

Summary:
Before this diff, operations that show progress bars would only show the progress bar without telling exactly how many things (and which things) were in progress.

This diff changes that so that updates that provide these numbers (mainly Sapling operations at the moment) will also show up.

Reviewed By: evangrayk

Differential Revision: D66708037

fbshipit-source-id: dac17b0643d5f36533aa5f5063283ac83524bd4a

addons/isl-server/src/Repository.ts

@@ -692,6 +692,7 @@ export class Repository {
             message: msg.topic,
             progress: msg.position,
             progressTotal: msg.total,
+            unit: msg.unit,
           });
         }
       } catch (err) {

addons/isl/src/CommandHistoryAndProgress.tsx

@@ -272,11 +272,12 @@ export function CommandHistoryAndProgress() {
         {showLastLineOfOutput ? (
           <div className="progress-container-row">
             <div className="progress-container-last-output">
-              {progress.currentProgress != null ? (
+              {progress.currentProgress != null && progress.currentProgress.unit != null ? (
                 <ProgressLine
                   progress={progress.currentProgress.progress}
                   progressTotal={progress.currentProgress.progressTotal}>
-                  {progress.currentProgress.message}
+                  {progress.currentProgress.message +
+                    ` - ${progress.currentProgress.progress}/${progress.currentProgress.progressTotal} ${progress.currentProgress.unit}`}
                 </ProgressLine>
               ) : (
                 processedLines.length > 0 && <ProgressLine>{processedLines.at(-1)}</ProgressLine>

addons/isl/src/types.ts

@@ -589,6 +589,7 @@ export type ProgressStep = {
   message: string;
   progress?: number;
   progressTotal?: number;
+  unit?: string;
 };
 
 export type OperationCommandProgressReporter = (