Set up database migrations

migrations/00001_users.sql

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+-- +goose Up
+-- +goose StatementBegin
+CREATE TABLE users (
+  id SERIAL PRIMARY KEY,
+  email TEXT UNIQUE NOT NULL,
+  password_hash TEXT NOT NULL
+);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TABLE users;
+-- +goose StatementEnd

migrations/00002_sessions.sql

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+-- +goose Up
+-- +goose StatementBegin
+CREATE TABLE sessions (
+  id SERIAL PRIMARY KEY,
+  user_id INT UNIQUE REFERENCES users (id) ON DELETE CASCADE,
+  token_hash TEXT UNIQUE NOT NULL
+);
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+DROP TABLE sessions;
+-- +goose StatementEnd

migrations/fs.go

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+package migrations
+
+import "embed"
+
+//go:embed *.sql
+var FS embed.FS