[cleanup] precommit checks

precommit.sh now checks license headers.

install_precommit.sh installs precommit.sh to .git/

license_exemptions.sh defines a function that says whether
  a file needs a license header.

Bug: 445730006
Change-Id: Idb30e023ac4303a6a11ac44ff9ca49c5345ef7ec
Reviewed-on: https://fuchsia-review.googlesource.com/c/rsclient/+/1372944
Reviewed-by: James Robinson <jamesr@google.com>
Commit-Queue: David Fang <fangism@google.com>
3 files changed
tree: 02927981fbe292c93b34facb9f715208ae4a5888
  1. scripts/
  2. LICENSE