Auto discover available host resources and dynamically set internal limits

[vordimous]

Describe the desired outcome from the user's perspective As a DevOps maintainer optimizing Zilla deployments, I would expect Zilla to run as fast as the host environment allows. In cases where specific performance improvements are needed, I would expect to be able to tune resource limits manually.

Acceptance criteria

• Zilla discovers available resources
• Zilla appropriately sets the internal resource limits automatically based on available resources
• There is a way to discover what limits have been set
• There are documented parameters to manually tune resource limits inside of Zilla