feat(postgres): added image urls to the database

pkg/database/migrations/001_inital_database.sql

@@ -57,6 +57,9 @@ CREATE TABLE "PostReference"
     post_id          TEXT REFERENCES "Post" (id),
     source_id        TEXT REFERENCES "Source" (id),
     url              TEXT NOT NULL UNIQUE,
+    full_file_url    TEXT,
+    preview_file_url TEXT,
+    sample_file_url  TEXT,
     source_post_id   TEXT,
     PRIMARY KEY (post_id, source_id)
 );

pkg/models/pgModels/postReference.go

@@ -5,4 +5,7 @@ type PostReference struct {
 	SourceID       string `gorm:"primaryKey"`
 	URL            string `gorm:"not null;unique"`
 	SourcePostID   string
+	FullFileURL    string
+	PreviewFileURL string
+	SampleFileURL  string
 }