Added domain types

src/myaktion/main.go

+package main
+
+import (
+	"fmt"
+
+	"gitlab.reutlingen-university.de/go-exercises/myaktion-go/src/myaktion/model"
+)
+
+func main() {
+	c := model.Campaign{
+		Name:            "Kinder helfen",
+		OrganizerName:   "Hans Schmidt",
+		TargetAmount:    10000.0,
+		DonationMinimum: 10.0,
+		Account: model.Account{
+			Name:     "Kinder helfen",
+			BankName: "Raiffeisen",
+			Number:   "1234567890",
+		},
+	}
+	c.Donations = append(c.Donations, model.Donation{
+		Amount:           100.0,
+		DonorName:        "Hans Muster",
+		ReceiptRequested: true,
+		Status:           model.IN_PROCESS,
+		Account: model.Account{
+			Name:     "Hans Muster",
+			BankName: "Raiffeisen",
+			Number:   "1234567890",
+		},
+	})
+	fmt.Printf("%+v\n", c)
+
+}

src/myaktion/model/account.go

+package model
+
+type Account struct {
+	Name     string
+	BankName string
+	Number   string
+}

src/myaktion/model/campaign.go

+package model
+
+type Campaign struct {
+	Name               string
+	OrganizerName      string
+	TargetAmount       float64
+	DonationMinimum    float64
+	AmountDonatedSoFar float64
+	Donations          []Donation
+	Account            Account
+}

src/myaktion/model/donation.go

+package model
+
+type Status string
+
+const (
+	TRANSFERRED Status = "TRANSFERRED"
+	IN_PROCESS  Status = "IN_PROCESS"
+)
+
+type Donation struct {
+	Amount           float64
+	DonorName        string
+	ReceiptRequested bool
+	Account          Account
+	Status           Status
+}