use sourcemap for correct filename and line number in logging

database/esbuild.config.ts

@@ -9,6 +9,7 @@ build({
   platform: 'node',
   packages: 'external',
   outdir: './build',
+  sourcemap: true,
   plugins: [
     {
       // hardcode last db version string into index.ts, before parsing

database/package.json

@@ -45,6 +45,7 @@
     "log4js": "^6.9.1",
     "mysql2": "^2.3.0",
     "reflect-metadata": "^0.1.13",
+    "source-map-support": "^0.5.21",
     "ts-mysql-migrate": "^1.0.2",
     "tsx": "^4.19.4",
     "typeorm": "^0.3.22",