feat: create invidious-config ConfigMap and reference it in deployment

cluster/apps/invidious/inv-configmap.yml

@@ -0,0 +1,19 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: invidious-config
+data:
+  config.yaml: |
+    db:
+      dbname: "${POSTGRES_DB}"
+      user: "${POSTGRES_USER}"
+      password: "${POSTGRES_PASSWORD}"
+      host: "invidious-db"
+      port: 5432
+    check_tables: true
+    invidious_companion:
+    - private_url: "http://companion:8282"
+      public_url: "http://localhost:8282"
+    invidious_companion_key: "${COMPANION_KEY}"
+    hmac_key: "${HMAC_KEY}"