[interest check for new store] sqlite3 store using CGO-less modernc.org/sqlite

[rmmh]

Is there interest in an sqlite3 store using the CGO-less translation of sqlite3 at https://modernc.org/sqlite + https://github.com/zombiezen/go-sqlite ? Performance is roughly 30% worse than the CGO version.

The translation from sqlite3store is relatively trivial, here's a snippet:

func (p *SQLite3XStore) exec(query string, opts *sqlitex.ExecOptions) error {
	conn, err := p.pool.Take(context.Background())
	if err != nil {
		return err
	}
	defer p.pool.Put(conn)
	return sqlitex.Execute(conn, query, opts)
}

// Find returns the data for a given session token from the SQLite3XStore instance.
// If the session token is not found or is expired, the returned exists flag will
// be set to false.
func (p *SQLite3XStore) Find(token string) (b []byte, exists bool, err error) {
	err = p.exec("SELECT data FROM sessions WHERE token = $1 AND julianday('now') < expiry",
		&sqlitex.ExecOptions{
			Args: []any{token},
			ResultFunc: func(stmt *sqlite.Stmt) error {
				exists = true
				b = make([]byte, stmt.ColumnLen(0))
				stmt.ColumnBytes(0, b)
				return nil
			},
		})
	return
}