breaking: move maxmind config to config.providers

- moved maxmind to separate module
- code refactored
- simplified test

internal/acl/types/city_info.go

@@ -1,10 +0,0 @@
-package acl
-
-type City struct {
-	Location struct {
-		TimeZone string `maxminddb:"time_zone"`
-	} `maxminddb:"location"`
-	Country struct {
-		IsoCode string `maxminddb:"iso_code"`
-	} `maxminddb:"country"`
-}

internal/acl/types/ip_info.go

@@ -1,9 +0,0 @@
-package acl
-
-import "net"
-
-type IPInfo struct {
-	IP   net.IP
-	Str  string
-	City *City
-}