Function count_rules 

pub fn count_rules() -> Result<i32, WindowsFirewallError>

Retrieves the total number of firewall rules.

This function initializes COM, creates a firewall policy object, and fetches the total count of firewall rules.

Returns

Returns a Result<i32, WindowsFirewallError> with the number of firewall rules if successful. In case of an error (e.g., COM initialization failure), it returns a WindowsFirewallError.

Errors

This function may return a WindowsFirewallError if there is a failure during:

• COM initialization WindowsFirewallError::CoInitializeExFailed.
• Fetching the firewall rules count.

Security

This function does not require administrative privileges.