Implement transferTo method in RealBufferedSource.inputStream

[iseki0]

Avoid unnecessary memory copying, during transfer data between streams.

[iseki0]

Since I can't run the check process... I manually edit it.

[iseki0]

@oldergod Looks like it's not relate to me?

[iseki0]

* What went wrong:
Could not determine the dependencies of task ':kotlinNodeJsSetup'.
> Could not resolve all files for configuration ':detachedConfiguration1'.
   > Could not download node-21.4.0-win-x64.zip (org.nodejs:node:21.4.0)
      > Could not get resource 'https://nodejs.org/dist/v21.4.0/node-v21.4.0-win-x64.zip'.

         > Read timed out

> Could not resolve all files for configuration ':detachedConfiguration1'.
For more on this, please refer to https://docs.gradle.org/8.4/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.
   > Could not download node-21.0.0-v8-canary202309143a48826a08-darwin-arm64.tar.gz (org.nodejs:node:21.0.0-v8-canary202309143a48826a08)
      > Could not get resource 'https://nodejs.org/download/v8-canary/v21.0.0-v8-canary202309143a48826a08/node-v21.0.0-v8-canary202309143a48826a08-darwin-arm64.tar.gz'.
         > Read timed out

Maybe we should cache it?

[iseki0]

@oldergod 😉 It's OK

[iseki0]

@swankjesse Any updates? 😊

[iseki0]

@JakeWharton done