Use goose for migrations

postgres/schema/0001_budgets.sql

@@ -0,0 +1,9 @@
+-- +goose Up
+CREATE TABLE budgets (
+    id char(26) NOT NULL,
+    name text NOT NULL,
+    last_modification timestamp with time zone
+);
+
+-- +goose Down
+DROP TABLE budgets;

postgres/schema/0002_user_budgets.sql

@@ -0,0 +1,8 @@
+-- +goose Up
+CREATE TABLE user_budgets (
+    user_id char(26) NOT NULL,
+    budget_id char(26) NOT NULL
+);
+
+-- +goose Down
+DROP TABLE user_budgets;

postgres/schema/0003_users.sql

@@ -0,0 +1,10 @@
+-- +goose Up
+CREATE TABLE users (
+    id char(26) NOT NULL,
+    email text NOT NULL,
+    name text NOT NULL,
+    password text NOT NULL
+);
+
+-- +goose Down
+DROP TABLE users;