moved SkSL InlineMarker and UnresolvedFunction data into IRNode

Change-Id: I05b940c69b7756d41277626fc3eef06003d133c1
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/324886
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
11 files changed