Migrate to independent service provider architecture

[amilajack]

The current api requires all the service providers to be loaded when falcon-core is imported. falcon-core currently takes about an entire second to load. Each provider requires its own native dependency. For example, the SqliteProvider depends on sqlite3, which is a native dep. Webpack can't work with native deps yet so this really hurts our perf of importing native deps (which includes falcon-core). We should migrate to an api which allows users of falcon-core to import only the providers they need like so:

async function main() {
  const  { SqliteProvider } = import('falcon-core')
  const serverInfo = {...};
  const serverSession = db.createServer(SqliteProvider, serverInfo);
  const connection = await serverSession.createConnection('demo.sqlite');
  await connection.connect();
  const schema = await connection.getSchema('tracks');
}