Move old backend code to old_src folder

Signed-off-by: David Mehren <git@herrmehren.de>

src/lib/logger.ts

@@ -1,20 +0,0 @@
-import { createLogger, format, transports } from 'winston'
-
-const logger = createLogger({
-  level: 'debug',
-  format: format.combine(
-    format.uncolorize(),
-    format.timestamp(),
-    format.align(),
-    format.splat(),
-    format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`)
-  ),
-  transports: [
-    new transports.Console({
-      handleExceptions: true
-    })
-  ],
-  exitOnError: false
-})
-
-export { logger }