move models into model folder. Some models not moved due to local type.

internal/model/campaign.go

@@ -0,0 +1,41 @@
+package model
+
+import "time"
+
+type CampaignEvent struct {
+	ID         uint32
+	Unk0       uint32
+	MinHR      int16
+	MaxHR      int16
+	MinSR      int16
+	MaxSR      int16
+	MinGR      int16
+	MaxGR      int16
+	Unk1       uint16
+	Unk2       uint8
+	Unk3       uint8
+	Unk4       uint16
+	Unk5       uint16
+	Start      time.Time
+	End        time.Time
+	Unk6       uint8
+	String0    string
+	String1    string
+	String2    string
+	String3    string
+	Link       string
+	Prefix     string
+	Categories []uint16
+}
+
+type CampaignCategory struct {
+	ID          uint16
+	Type        uint8
+	Title       string
+	Description string
+}
+
+type CampaignLink struct {
+	CategoryID uint16
+	CampaignID uint32
+}