[sksg] Initial text support

Use the new node type for SkottieSlide2 labels.

TBR=

Change-Id: Icd6a4faf1c281bd83a2331c0072d1a6ed71acc09
Reviewed-on: https://skia-review.googlesource.com/102441
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Florin Malita <fmalita@chromium.org>
diff --git a/BUILD.gn b/BUILD.gn
index 18d16de..f48c62e 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1401,6 +1401,7 @@
       "experimental/sksg/geometry/SkSGMerge.cpp",
       "experimental/sksg/geometry/SkSGPath.cpp",
       "experimental/sksg/geometry/SkSGRect.cpp",
+      "experimental/sksg/geometry/SkSGText.cpp",
       "experimental/sksg/geometry/SkSGTrimEffect.cpp",
       "experimental/sksg/paint/SkSGColor.cpp",
       "experimental/sksg/paint/SkSGGradient.cpp",