Move ct_skps recipe from tools repo to Skia repo.
Also move the isolate file and script from Chromium repo to the Skia repo.

BUG=skia:5620
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2221413002

Review-Url: https://codereview.chromium.org/2221413002
52 files changed