add stats daily

stats.go

@@ -4,7 +4,7 @@ import (
 	"time"
 )
 
-type Stat struct {
+type StatMonthly struct {
 	CompanyID                     uint8
 	Date                          time.Time
 	Trains                        int
@@ -28,3 +28,13 @@ type Stat struct {
 	PerformancePreviousQuarter    int
 	DeliveredCargoPreviousQuarter int
 }
+
+type StatDaily struct {
+	Money  int64
+	Loan   int64
+	Value  int64
+	Trains int
+	Road   int
+	Planes int
+	Ships  int
+}