feat: Use CIDR format for connection-manager allow/deny lists

[acul71]

@SgtPooki @wemeetagain @dhuseby

Description

This PR updates the connection manager to treat multiaddrs in the allow/deny lists using the standard IP CIDR format (e.g. /ip4/52.55.0.0/ipcidr/16) rather than string prefixes (e.g. /ip4/52.55). This allows us to validate multiaddrs accurately and ensures better control over IP address matching.

Changes:

• Converted the .allow and .deny properties in the connection manager to use IpNet[] for IP range validation.
• Updated tests to use the IpNet format for both allow and deny lists.
• This will improve validation, making it more aligned with IP network management best practices by using CIDR blocks.

Relevant issues:

• Related to: Use standard IP cidr format for allow/deny lists #1510.

Notes & open questions

• How developer will know that they have to use IpNet format in allow and deny list?
• This PR focuses on using the IpNet format to ensure the connection manager handles IPs in CIDR notation.
• Any future changes related to this feature would involve expanding IP management logic.

Change checklist

• I have performed a self-review of my own code
• I have made corresponding changes to the documentation if necessary (this includes comments as well)
• I have added tests that prove my fix is effective or that my feature works