message: Implement `ToSql` & `FromSql` for `Box<str>`
diff: @@ -584,6 +584,18 @@ impl<'a> FromSql<'a> for String {
  }
  }
  +impl<'a> FromSql<'a> for Box<str> {
  + fn from_sql(_: &Type, raw: &'a [u8]) -> Result<Box<str>, Box<dyn Error + Sync + Send>> {
  + types::text_from_sql(raw)
  + .map(ToString::to_string)
  + .map(String::into_boxed_str)
  + }
  +
  + fn accepts(ty: &Type) -> bool {
  + <&str as FromSql>::accepts(ty)
  + }
  +}
  +
  impl<'a> FromSql<'a> for &'a str {
  fn from_sql(_: &Type, raw: &'a [u8]) -> Result<&'a str, Box<dyn Error + Sync + Send>> {
  types::text_from_sql(raw)
  @@ -933,6 +945,18 @@ impl ToSql for String {
  to_sql_checked!();
  }
  +impl ToSql for Box<str> {
  + fn to_sql(&self, ty: &Type, w: &mut BytesMut) -> Result<IsNull, Box<dyn Error + Sync + Send>> {
  + <&str as ToSql>::to_sql(&&**self, ty, w)
  + }
  +
  + fn accepts(ty: &Type) -> bool {
  + <&str as ToSql>::accepts(ty)
  + }
  +
  + to_sql_checked!();
  +}
  +
  macro_rules! simple_to {
  ($t:ty, $f:ident, $($expected:ident),+) => {
  impl ToSql for $t {
  