Self-hosted scheduler documentation/samples

**What content needs to be created or modified?**
"How to run the scheduler in self-hosted mode"
With variants for docker/podman and docker compose

**Describe the solution you'd like**
Updated docs for launching the scheduler as well as updated samples incorporating the scheduler with code snippets.

**Where should the new material be placed?**
https://docs.dapr.io/operations/hosting/self-hosted/self-hosted-with-docker/

**The associated pull request from dapr/dapr, dapr/components-contrib, or other Dapr code repos**
https://github.com/dapr/dapr/pull/7768

**Additional context**