feat: create accounts to partition money

internal/model/money_account.go

@@ -0,0 +1,34 @@
+package model
+
+import "time"
+
+type TransferDirection string
+
+const (
+	TransferDirectionDeposit    TransferDirection = "deposit"
+	TransferDirectionWithdrawal TransferDirection = "withdrawal"
+)
+
+type MoneyAccount struct {
+	ID        string    `db:"id"`
+	SpaceID   string    `db:"space_id"`
+	Name      string    `db:"name"`
+	CreatedBy string    `db:"created_by"`
+	CreatedAt time.Time `db:"created_at"`
+	UpdatedAt time.Time `db:"updated_at"`
+}
+
+type AccountTransfer struct {
+	ID          string            `db:"id"`
+	AccountID   string            `db:"account_id"`
+	AmountCents int               `db:"amount_cents"`
+	Direction   TransferDirection `db:"direction"`
+	Note        string            `db:"note"`
+	CreatedBy   string            `db:"created_by"`
+	CreatedAt   time.Time         `db:"created_at"`
+}
+
+type MoneyAccountWithBalance struct {
+	MoneyAccount
+	BalanceCents int
+}