feat: use dynamic config instead of static

[kamilsk]

Motivation: it allows to avoid redeploying process and improves service maintenance.

Candidates

• https://doc.traefik.io/traefik/providers/consul/
• https://doc.traefik.io/traefik/providers/etcd/
• https://doc.traefik.io/traefik/providers/http/
• https://doc.traefik.io/traefik/providers/consul-catalog/

[kamilsk]

won't do because I split dynamic config https://github.com/octomation/stub/tree/main/traefik/dynamic