feat(servers): implement saervers monitoring

internal/models/server.go

@@ -0,0 +1,26 @@
+package models
+
+import "time"
+
+type GameServer struct {
+	ID                int        `json:"id"`
+	Name              string     `json:"name"`
+	Address           string     `json:"address"`
+	IsEnabled         bool       `json:"is_enabled"`
+	StatusJSON        *string    `json:"-"`
+	LastPolledAt      *time.Time `json:"last_polled_at"`
+	Motd              *string    `json:"motd"`
+	PlayerCount       *int       `json:"player_count"`
+	MaxPlayers        *int       `json:"max_players"`
+	VersionName       *string    `json:"version_name"`
+	PingBackendServer *int       `json:"ping_proxy_server"`
+}
+
+type ServerStatus struct {
+	StatusJSON  string
+	Motd        string
+	PlayerCount int
+	MaxPlayers  int
+	VersionName string
+	Ping        int64
+}