Create SQlite database

use rusqlite::{Connection, Result};
use rusqlite::NO_PARAMS;

fn main() -> Result<()> {
  let conn = Connection::open("cats.db")?;
  conn.execute(
    "create table if not exists cat_colors (
    id integer primary key,
    name text not null unique
    )",
    NO_PARAMS,
  )?;
  conn.execute(
    "create table if not exists cats (
    id integer primary key,
    name text not null,
    color_id integer not null references cat_colors(id)
    )",
    NO_PARAMS,
  )?;
  Ok(())
}