new phpcs builders and job templates

Creates builder and job templates for the phpcs shell wrapper introduced
in integration/jenkins.git by https://gerrit.wikimedia.org/r/77279

The builder macro are named:

phpcs-strict
phpcs-strict-HEAD
phpcs-lenient
phpcs-lenient-HEAD

Job templates uses the same name with '{name}-' as a prefix.

bug: 48420
Change-Id: Ie1de6b77bade40505f1f7f4a86a26ed7a489a75c
new phpcs jobs for mw/ext/Translate

Siebrand and Antoine hereby elect Translate the Guinea pig for phpcs
testing.

bug: 48420
Change-Id: I8c3c45c49c832bdd36213c0a1cd37dd51a6fd7f0