BTHLABS-64: Support for customized environments

Co-authored-by: Tomek Wójcik <labs@tomekwojcik.pl>
Co-committed-by: Tomek Wójcik <labs@tomekwojcik.pl>

deployment/hotpocket.bthlab/resources/backend/config-map-local-deps.yaml

@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: backend-local-deps
+  namespace: hotpocket-development
+data:
+  01-install-extra-deps.sh: |
+    #!/usr/bin/env bash
+    export PIP_INDEX_URL="https://nexus.bthlabs.pl/repository/pypi/simple/"
+    /srv/venv/bin/pip install -r /srv/lib/requirements.txt
+  99-collectstatic.sh: |
+    #!/usr/bin/env bash
+    (
+      cd /srv/app;
+      ./manage.py collectstatic --no-input
+    )
+  requirements.txt: |
+    hotpocket_bthlabs==25.10.27