[fuchsia] Add host chromedriver build and CIPD package.

* Add the host chromedriver binary as part of the Fuchsia build.
* Add a CIPD package to upload a stripped chromedriver binary.

Bug: IN-1321 (Fuchsia internal)
Change-Id: Ia414914304ede7a54ff097365bb72cba6674e5ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1719377
Commit-Queue: Fabrice de Gans-Riberi <[email protected]>
Commit-Queue: John Budorick <[email protected]>
Reviewed-by: John Budorick <[email protected]>
Reviewed-by: Wez <[email protected]>
Auto-Submit: Fabrice de Gans-Riberi <[email protected]>
Cr-Commit-Position: refs/heads/master@{#682114}
2 files changed