Add phpcs

* Added basic config for phpcs
4 jobs for 8-setup-phpcs in 1 minute and 5 seconds (queued for 1 second)
Status Job ID Name Coverage
  Lint
passed #411
lint:lint-php5.4

00:00:39

passed #412
lint:lint-php5.6

00:00:37

passed #413
lint:lint-php7.0

00:00:36

 
  Codesniffer
failed #414
codesniffer

00:00:26

 
Name Stage Failure
failed
codesniffer Codesniffer There is an unknown failure, please try again
 16 | ERROR   | [ ] Use of the "global" keyword is forbidden; use
| | "$GLOBALS['argv']" instead
----------------------------------------------------------------------
PHPCBF CAN FIX THE 2 MARKED SNIFF VIOLATIONS AUTOMATICALLY
----------------------------------------------------------------------

Time: 293ms; Memory: 7Mb

ERROR: Job failed: exit code 1