Add is_archived option for issue indexer (#32735)

Try to fix #32697

Reason：
`is_archived` is already defined in the query options, but it is not
implemented in the indexer.

modules/indexer/issues/indexer_test.go

@@ -37,6 +37,7 @@ func TestDBSearchIssues(t *testing.T) {
 	t.Run("search issues by ID", searchIssueByID)
 	t.Run("search issues is pr", searchIssueIsPull)
 	t.Run("search issues is closed", searchIssueIsClosed)
+	t.Run("search issues is archived", searchIssueIsArchived)
 	t.Run("search issues by milestone", searchIssueByMilestoneID)
 	t.Run("search issues by label", searchIssueByLabelID)
 	t.Run("search issues by time", searchIssueByTime)
@@ -298,6 +299,33 @@ func searchIssueIsClosed(t *testing.T) {
 	}
 }
 
+func searchIssueIsArchived(t *testing.T) {
+	tests := []struct {
+		opts        SearchOptions
+		expectedIDs []int64
+	}{
+		{
+			SearchOptions{
+				IsArchived: optional.Some(false),
+			},
+			[]int64{22, 21, 17, 16, 15, 13, 12, 11, 20, 6, 5, 19, 18, 10, 7, 4, 9, 8, 3, 2, 1},
+		},
+		{
+			SearchOptions{
+				IsArchived: optional.Some(true),
+			},
+			[]int64{14},
+		},
+	}
+	for _, test := range tests {
+		issueIDs, _, err := SearchIssues(context.TODO(), &test.opts)
+		if !assert.NoError(t, err) {
+			return
+		}
+		assert.Equal(t, test.expectedIDs, issueIDs)
+	}
+}
+
 func searchIssueByMilestoneID(t *testing.T) {
 	tests := []struct {
 		opts        SearchOptions