Show pause information in "workflow describe" command (#899)

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## What was changed
<!-- Describe what has changed in this PR -->
`temporal workflow describe` now shows pause information if the workflow
is paused.

## Why?
When a workflow is paused we need to show the relevant pause information
like paused time, identity & reason.

## Checklist
<!--- add/delete as needed --->

1. Closes <!-- add issue number here -->

2. How was this tested:
Tested manually

3. Any docs updates needed?
N/A

Author: gow

temporalcli/commands.workflow_pause.go

@@ -13,10 +13,10 @@ func (c *TemporalWorkflowPauseCommand) run(cctx *CommandContext, args []string)
 
 	_, err = cl.WorkflowService().PauseWorkflowExecution(cctx, &workflowservice.PauseWorkflowExecutionRequest{
 		Namespace:  c.Parent.Namespace,
-		Reason:     c.Reason,
 		WorkflowId: c.WorkflowId,
 		RunId:      c.RunId,
 		Identity:   c.Parent.Identity,
+		Reason:     c.Reason,
 	})
 	if err != nil {
 		return err

temporalcli/commands.workflow_view.go

@@ -161,6 +161,18 @@ func (c *TemporalWorkflowDescribeCommand) run(cctx *CommandContext, args []strin
 			OriginalStartTime:       timestampToTime(extendedInfo.OriginalStartTime),
 		}, printer.StructuredOptions{})
 	}
+	if extendedInfo != nil && extendedInfo.PauseInfo != nil {
+		cctx.Printer.Println(color.MagentaString("Pause Info:"))
+		_ = cctx.Printer.PrintStructured(struct {
+			Identity   string    `cli:",cardOmitEmpty"`
+			Reason     string    `cli:",cardOmitEmpty"`
+			PausedTime time.Time `cli:",cardOmitEmpty"`
+		}{
+			Identity:   extendedInfo.PauseInfo.GetIdentity(),
+			Reason:     extendedInfo.PauseInfo.GetReason(),
+			PausedTime: timestampToTime(extendedInfo.PauseInfo.GetPausedTime()),
+		}, printer.StructuredOptions{})
+	}
 
 	staticSummary := resp.GetExecutionConfig().GetUserMetadata().GetSummary()
 	staticDetails := resp.GetExecutionConfig().GetUserMetadata().GetDetails()