RFR: 8298971: Move Console implementation into jdk internal package

[Jaikiran Pai]

On Mon, 19 Dec 2022 19:23:25 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> Moving the built-in implementation of `Console` from `java.io` package into `jdk.internal.io` package. It now implements `JdkConsole` interface and is accessed through `ProxyingConsole`.

src/java.base/share/classes/jdk/internal/io/JdkConsoleImpl.java line 179:

> 177:     private Writer out;
> 178:     private PrintWriter pw;
> 179:     private Formatter formatter;

Hello Naoto, I think some of these can be made `final`.

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PR: https://git.openjdk.org/jdk/pull/11729