Coder Secrets Telemetry (for Templates and Organizations)

Related issue: https://github.com/coder/internal/issues/808

Extend telemetry for Coder Secrets:
- How many **workspaces** access secrets with `coder secret get` and how many times
- How many **Templates** have set secrets and number of secrets per template
- How many **Organizations** have set secrets number secrets of per organization