[bazel] Add target for svg_writer

Bug: b/40045064
Change-Id: I7dfd9f2d297ff406b8f999c2a46a352ac55d3950
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/853102
Reviewed-by: Florin Malita <fmalita@google.com>
6 files changed