MM-57013 Added download button for downloading logs from server logs page in system console (#26389)

* added download system logs

* download all logs

* download all logs check-lint fix

* check lint fix

* download logs api

* download logs api working

* download logs working with error log

* linting issues and code cleanup

* CI check fix

* documented the api and logs from file with error handling

* test and final changes done

* final changes done

* Fix order of server-side translations

* Fix incorrect indentation of logs.yaml

---------

Co-authored-by: Harrison Healey <harrisonmhealey@gmail.com>

server/public/model/client4.go

@@ -5862,6 +5862,20 @@ func (c *Client4) GetLogs(ctx context.Context, page, perPage int) ([]string, *Re
 	return c.ArrayFromJSON(r.Body), BuildResponse(r), nil
 }
 
+// Download logs as mattermost.log file
+func (c *Client4) DownloadLogs(ctx context.Context) ([]byte, *Response, error) {
+	r, err := c.DoAPIGet(ctx, "/logs/download", "")
+	if err != nil {
+		return nil, BuildResponse(r), err
+	}
+	data, err := io.ReadAll(r.Body)
+	if err != nil {
+		return nil, BuildResponse(r), NewAppError("DownloadLogs", "model.client.read_file.app_error", nil, "", r.StatusCode).Wrap(err)
+	}
+
+	return data, BuildResponse(r), nil
+}
+
 // PostLog is a convenience Web Service call so clients can log messages into
 // the server-side logs. For example we typically log javascript error messages
 // into the server-side. It returns the log message if the logging was successful.