switch to pgx driver + create merch

internal/merch/model.go

@@ -6,7 +6,7 @@ import (
 )
 
 type Merch struct {
-	Id        uint
+	Id        int64
 	CreatedAt time.Time
 	UpdatedAt sql.NullTime
 	DeletedAt sql.NullTime
@@ -17,7 +17,7 @@ type Merch struct {
 
 // Origin model. Table name: merch_origins
 type Origin struct {
-	Id        uint
+	Id        int64
 	CreatedAt time.Time
 	DeletedAt sql.NullTime
 	Name      string
@@ -25,11 +25,22 @@ type Origin struct {
 
 // Price model. Table name: merch_prices
 type Price struct {
-	Id        uint
+	Id        int64
 	CreatedAt time.Time
 	UpdatedAt sql.NullTime
 	DeletedAt sql.NullTime
 	MerchUuid string
 	Price     int
-	OriginId  uint
+	OriginId  int64
+}
+
+// ExtraData model. Table name: merch_extra_data
+type ExtraData struct {
+	Id        int64
+	CreatedAt time.Time
+	UpdatedAt sql.NullTime
+	DeletedAt sql.NullTime
+	MerchId   int64
+	OriginId  int64
+	URL       string
 }