Add script to build and push Docker images to registry

- Introduced `push-images.sh` script for building and pushing backend and frontend images.
- Added functionality to select or input image tags.
- Integrated environment variable support for registry configuration.
- Implemented prompts for user confirmation before building and pushing images.
- Updated `docker-compose.prod.yml` with new image tags after pushing.

backend/src/db/migrations/meta/_journal.json

@@ -0,0 +1,7 @@
+{
+  "entries": [
+    { "idx": 0, "version": 1, "when": 1734633120, "tag": "0000_init", "breakpoint": false },
+    { "idx": 1, "version": 1, "when": 1734633121, "tag": "0001_add_strips", "breakpoint": false },
+    { "idx": 2, "version": 1, "when": 1734633122, "tag": "0002_pack_inventory", "breakpoint": false }
+  ]
+}