feat: add storage and media table

backend/database/migrations/20250110093539_create_storages.sql

@@ -0,0 +1,19 @@
+-- +goose Up
+-- +goose StatementBegin
+-- create storages table
+CREATE TABLE storages (
+    id SERIAL8 PRIMARY KEY,
+    created_at timestamp NOT NULL default now(),
+    updated_at timestamp NOT NULL default now(),
+
+    is_default BOOLEAN NOT NULL default false,
+    name VARCHAR(128) NOT NULL default '',
+    type INT2 NOT NULL default 0,
+    config JSONB NOT NULL default '{}'
+);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TABLE storages;
+-- +goose StatementEnd