Adds feed type to Feed struct and table schema

internal/database/migrations/4_add-type-to-feed.sql

@@ -0,0 +1,7 @@
+-- +migrate Up
+ALTER TABLE feed
+ADD COLUMN type text;
+
+-- +migrate Down
+ALTER TABLE feed
+DROP COLUMN type;

internal/model/feed.go

@@ -1,8 +1,16 @@
 package model
 
+type FeedType int
+
+const (
+	Rss FeedType = iota
+	Youtube
+)
+
 type Feed struct {
-	ID     int64  `json:"id"`
-	Name   string `json:"name"`
-	Url    string `json:"url" validate:"required,url"`
-	UserID string `json:"userId" validate:"required"`
+	ID     int64    `json:"id"`
+	Name   string   `json:"name"`
+	Url    string   `json:"url" validate:"required,url"`
+	UserID string   `json:"userId" validate:"required"`
+	Type   FeedType `json:"type"`
 }