change db from sqlite3 to postgresql

assets/migrations/postgresql/20250102152758_article.sql

@@ -0,0 +1,17 @@
+-- +goose Up
+-- +goose StatementBegin
+CREATE TABLE articles (
+    id              SERIAL PRIMARY KEY,
+    title           VARCHAR(255) NOT NULL,
+    sourceUrl       VARCHAR(255) NOT NULL UNIQUE,
+    author          VARCHAR(255) NOT NULL,
+    content         TEXT NOT NULL,
+    publishDate     TIMESTAMP NOT NULL,
+    fetchDate       TIMESTAMP NOT NULL
+);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TABLE IF EXISTS articles;
+-- +goose StatementEnd