show data category in backup list (#5023)

Adds the backup's data category to the cli output.

before:
```
  ID                                    Started At            Duration    Status     Resource Owner
  09e8d1e3-92d4-426d-9ca1-3cd063ce8bb9  2024-01-12T17:54:33Z  16.103569s  Completed  rfinders@10rqc2.onmicrosoft.com
  893ef934-9403-4775-b667-09f77cd26e83  2024-01-12T17:55:22Z  5.66253s    Completed  rfinders@10rqc2.onmicrosoft.com
```

after:
```
  ID                                    Started at            Duration    Status     Protected resource               Data
  09e8d1e3-92d4-426d-9ca1-3cd063ce8bb9  2024-01-12T17:54:33Z  16.103569s  Completed  rfinders@10rqc2.onmicrosoft.com  Contacts,Emails,Events
  893ef934-9403-4775-b667-09f77cd26e83  2024-01-12T17:55:22Z  5.66253s    Completed  rfinders@10rqc2.onmicrosoft.com  Emails
```

---

#### Does this PR need a docs update or release note?

- [x] ⛔ No

#### Type of change

- [x] 🌻 Feature

#### Issue(s)

* #3748

#### Test Plan

- [x] 💪 Manual
- [x] ⚡ Unit test

CHANGELOG.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 - When running `backup details` on an empty backup returns a more helpful error message.
+- Backup List additionally shows the data category for each backup.
 
 ### Known issues
 - Backing up a group mailbox item may fail if it has a very large number of attachments (500+).

src/pkg/backup/backup.go

@@ -3,6 +3,7 @@ package backup
 import (
 	"context"
 	"fmt"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -16,6 +17,7 @@ import (
 	"github.com/alcionai/corso/src/internal/version"
 	"github.com/alcionai/corso/src/pkg/dttm"
 	"github.com/alcionai/corso/src/pkg/fault"
+	"github.com/alcionai/corso/src/pkg/logger"
 	"github.com/alcionai/corso/src/pkg/selectors"
 )
 
@@ -226,17 +228,19 @@ func (b Backup) MinimumPrintable() any {
 // for printing out to a terminal in a columnar display.
 func (b Backup) Headers(skipID bool) []string {
 	headers := []string{
-		"Started At",
+		"ID",
+		"Started at",
 		"Duration",
 		"Status",
-		"Resource Owner",
+		"Protected resource",
+		"Data",
 	}
 
 	if skipID {
-		return headers
+		headers = headers[1:]
 	}
 
-	return append([]string{"ID"}, headers...)
+	return headers
 }
 
 // Values returns the values matching the Headers list for printing
@@ -292,18 +296,33 @@ func (b Backup) Values(skipID bool) []string {
 
 	bs := b.toStats()
 
+	reasons, err := b.Selector.Reasons("doesnt-matter", false)
+	if err != nil {
+		logger.CtxErr(context.Background(), err).Error("getting reasons from selector")
+	}
+
+	reasonCats := []string{}
+
+	for _, r := range reasons {
+		reasonCats = append(reasonCats, r.Category().HumanString())
+	}
+
+	sort.Strings(reasonCats)
+
 	values := []string{
+		string(b.ID),
 		dttm.FormatToTabularDisplay(b.StartedAt),
 		bs.EndedAt.Sub(bs.StartedAt).String(),
 		status,
 		name,
+		strings.Join(reasonCats, ","),
 	}
 
 	if skipID {
-		return values
+		values = values[1:]
 	}
 
-	return append([]string{string(b.ID)}, values...)
+	return values
 }
 
 // ----- print backup stats

src/pkg/backup/backup_test.go

@@ -155,10 +155,11 @@ func (suite *BackupUnitSuite) TestBackup_HeadersValues() {
 		b        = stubBackup(now, "id", "name")
 		expectHs = []string{
 			"ID",
-			"Started At",
+			"Started at",
 			"Duration",
 			"Status",
-			"Resource Owner",
+			"Protected resource",
+			"Data",
 		}
 		nowFmt   = dttm.FormatToTabularDisplay(now)
 		expectVs = []string{
@@ -167,6 +168,7 @@ func (suite *BackupUnitSuite) TestBackup_HeadersValues() {
 			"1m0s",
 			"status (2 errors, 1 skipped: 1 malware)",
 			"name-pr",
+			"Contacts,Emails,Events",
 		}
 	)
 
@@ -194,10 +196,11 @@ func (suite *BackupUnitSuite) TestBackup_HeadersValues_onlyResourceOwners() {
 		b        = stubBackup(now, "id", "name")
 		expectHs = []string{
 			"ID",
-			"Started At",
+			"Started at",
 			"Duration",
 			"Status",
-			"Resource Owner",
+			"Protected resource",
+			"Data",
 		}
 		nowFmt   = dttm.FormatToTabularDisplay(now)
 		expectVs = []string{
@@ -206,6 +209,7 @@ func (suite *BackupUnitSuite) TestBackup_HeadersValues_onlyResourceOwners() {
 			"1m0s",
 			"status (2 errors, 1 skipped: 1 malware)",
 			"name-ro",
+			"Contacts,Emails,Events",
 		}
 	)