Use local copy of workbox service worker scripts (#1358)

* Use local copy of workbox service worker scripts

* Refactor workbox integration:

- Only add prod js, without maps. Reduces the size from 170k to 24k
- Removed it from build. As it is small now, we can add it to source, and have a script to just update it whenever it is required
- Fixed relative paths in navidrome-service-worker.js, should now work with BaseUrl != ''

Co-authored-by: Deluan <deluan@navidrome.org>

ui/bin/update-workbox.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env sh
+
+set -e
+
+export WORKBOX_DIR=public/3rdparty/workbox
+
+rm -rf ${WORKBOX_DIR}
+workbox copyLibraries build/3rdparty/
+
+mkdir -p public/3rdparty/workbox
+mv build/3rdparty/workbox-*/workbox-sw.js ${WORKBOX_DIR}
+mv build/3rdparty/workbox-*/workbox-core.prod.js ${WORKBOX_DIR}
+mv build/3rdparty/workbox-*/workbox-strategies.prod.js ${WORKBOX_DIR}
+mv build/3rdparty/workbox-*/workbox-routing.prod.js ${WORKBOX_DIR}
+mv build/3rdparty/workbox-*/workbox-navigation-preload.prod.js ${WORKBOX_DIR}
+rm -rf build/3rdparty/workbox-*