# Functions
GetConfigDir returns the directory where configuration files are stored.
GetLogDir returns the directory where log files are stored.
GetSiteConfigByHost returns the site configuration based on the host.
LoadAllConfigs loads all configurations from the configuration directory.
LoadConfig loads a configuration from a file.
SetCustomLogDir allows setting a custom log directory for testing.
# Variables
SiteConfigs is a global map of site configurations keyed by domain.
# Structs
SiteConfig contains the configuration for a single site.
SSLConfig represents the SSL configuration for a site.