feat(core): add Deno.core.writeAll(rid, chunk) (#16228)

This commit adds a new op_write_all to core that allows writing an
entire chunk in a single async op call. Internally this calls
`Resource::write_all`.

The `writableStreamForRid` has been moved to `06_streams.js` now, and
uses this new op. Various other code paths now also use this new op.

Closes #16227

core/lib.deno_core.d.ts

@@ -61,6 +61,11 @@ declare namespace Deno {
      */
     function write(rid: number, buf: Uint8Array): Promise<number>;
 
+    /**
+     * Write to a (stream) resource that implements write()
+     */
+    function writeAll(rid: number, buf: Uint8Array): Promise<void>;
+
     /**
      * Print a message to stdout or stderr
      */