[settings] Added codereview.settings for git cl

Bug: none
Change-Id: I371efd5837d38f34dd88359f12f989be0edbae44
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3688201
Auto-Submit: Kim-Anh Tran <[email protected]>
Reviewed-by: Daniel Clifford <[email protected]>
Commit-Queue: Daniel Clifford <[email protected]>
Reviewed-by: Philip Pfaffe <[email protected]>

Author: ktran

codereview.settings

@@ -0,0 +1,4 @@
+# This file is used by git-cl to get repository specific information.
+GERRIT_HOST: True
+CODE_REVIEW_SERVER: codereview.chromium.org
+PROJECT: devtools-frontend