initial schema and migrations

src/db/db.ts

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+import { Kysely, PostgresDialect } from "kysely";
+import { Pool } from "pg";
+import migrateToLatest from "./migrations";
+import Database from "./model";
+migrateToLatest();
+// You'd create one of these when you start your app.
+const db = new Kysely<Database>({
+  // Use MysqlDialect for MySQL and SqliteDialect for SQLite.
+  dialect: new PostgresDialect({
+    pool: new Pool({
+      host: process.env.POSTGRES_HOST,
+      database: process.env.POSTGRES_DATABASE,
+      user: process.env.POSTGRES_USER,
+      password: process.env.POSTGRES_PASSWORD,
+    }),
+  }),
+});
+/*
+async function demo() {
+  const { id } = await db
+    .insertInto("person")
+    .values({ first_name: "Jennifer", gender: "female" })
+    .returning("id")
+    .executeTakeFirstOrThrow();
+
+  await db
+    .insertInto("pet")
+    .values({ name: "Catto", species: "cat", owner_id: id })
+    .execute();
+
+  const person = await db
+    .selectFrom("person")
+    .innerJoin("pet", "pet.owner_id", "person.id")
+    .select(["first_name", "pet.name as pet_name"])
+    .where("person.id", "=", id)
+    .executeTakeFirst();
+
+  if (person) {
+    person.pet_name;
+  }
+}
+*/
+export default "e";