[FEATURE] Color support for core migrations
[FEATURE] Color support for core migrations

This change allows core migrations to output colored texts.
This is especially useful for errors and warnings that are likely
to be overlooked due to the verbosity of core migration output.

Note:

This feature requires the ``posix`` PHP extension to be active
(``ANSICON``/``ConEmuANSI`` support on Windows).

Change-Id: I78ddc6907db1bcdf16a67a2ea1651cdf6afbcdcf
Related: FLOW-223
Releases: master, 3.0
Original-Commit-Hash: ab0fcd7f1a0630d7b3b558ea60c0728015cbf4b0

kitsunet/flow-development-collection,fcool/flow-development-collection,kitsunet/flow-development-collection,chewbakartik/flow-development-collection,daniellienert/flow-development-collection,albe/flow-development-collection,mkeitsch/flow-development-collection,dfeyer/flow-development-collection,dlubitz/flow-development-collection,robertlemke/flow-development-collection,dfeyer/flow-development-collection,chewbakartik/flow-development-collection,dlubitz/flow-development-collection,mkeitsch/flow-development-collection,bwaidelich/flow-development-collection,albe/flow-development-collection,aertmann/flow-development-collection,kitsunet/flow-development-collection,aertmann/flow-development-collection,robertlemke/flow-development-collection,neos/flow-development-collection,dfeyer/flow-development-collection,kdambekalns/flow-development-collection,aertmann/flow-development-collection,neos/flow-development-collection,gerhard-boden/flow-development-collection,gerhard-boden/flow-development-collection,daniellienert/flow-development-collection,albe/flow-development-collection,dlubitz/flow-development-collection,neos/flow-development-collection,kdambekalns/flow-development-collection,kdambekalns/flow-development-collection,daniellienert/flow-development-collection,robertlemke/flow-development-collection,dfeyer/flow-development-collection,chewbakartik/flow-development-collection,bwaidelich/flow-development-collection,mkeitsch/flow-development-collection,robertlemke/flow-development-collection,gerhard-boden/flow-development-collection,fcool/flow-development-collection,bwaidelich/flow-development-collection,neos/flow-development-collection,fcool/flow-development-collection,fcool/flow-development-collection,kdambekalns/flow-development-collection