RFR: 8294987: Streamline DerOutputStream write

[Jamil Nimeh]

On Fri, 7 Oct 2022 15:47:49 GMT, Weijun Wang <weijun at openjdk.org> wrote:

> Return `this` in various output methods so you can write something like
> 
>         new DerOutputStream().putInteger(1)
>                 .putOctetString("12345".getBytes(StandardCharsets.UTF_8))
>                 .write(AlgorithmId.get("ed25519"))
>                 .writeImplicit((byte)0x80, new DerOutputStream().putUnalignedBitString(ba)).toByteArray();
> 
> No regression test. Trivial pure enhancement.

Looks good to me

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Marked as reviewed by jnimeh (Reviewer).

PR: https://git.openjdk.org/jdk/pull/10608