Add SpaceBeforeBraceLinter

Add linter to check that opening curly braces are always preceded by a
single space character.

Change-Id: Ifc00bc352d5382598e3f4371bd0d4214ee5606ca
Reviewed-on: https://gerrit.causes.com/23542
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Hao Su <hao.su@causes.com>