[2.0] Replace modules integration

[Jean85]

This starts from #682, DO NOT MERGE before that. See the reduced diff here.
Fully rebased, it's ready to be reviewed and merged now!

With this change, the ModulesIntegration is refactored to use jean85/pretty-package-versions instead of the whole composer/composer as an optional dependency. This has 2 consequences:

1. The dependency tree of the suggested dependency is really smaller. It goes from this (2 extensions and 13 packages):

$ composer show -t composer/composer
composer/composer 1.7.3
├──composer/ca-bundle ^1.0
│  ├──ext-openssl *
│  ├──ext-pcre *
│  └──php ^5.3.2 || ^7.0
├──composer/semver ^1.0
│  └──php ^5.3.2 || ^7.0
├──composer/spdx-licenses ^1.2
│  └──php ^5.3.2 || ^7.0
├──composer/xdebug-handler ^1.1
│  ├──php ^5.3.2 || ^7.0
│  └──psr/log ^1.0
│     └──php >=5.3.0
├──justinrainbow/json-schema ^3.0 || ^4.0 || ^5.0
│  └──php >=5.3.3
├──php ^5.3.2 || ^7.0
├──psr/log ^1.0
│  └──php >=5.3.0
├──seld/jsonlint ^1.4
│  └──php ^5.3 || ^7.0
├──seld/phar-utils ^1.0
│  └──php >=5.3
├──symfony/console ^2.7 || ^3.0 || ^4.0
│  ├──php ^7.1.3
│  └──symfony/polyfill-mbstring ~1.0
│     └──php >=5.3.3
├──symfony/filesystem ^2.7 || ^3.0 || ^4.0
│  ├──php ^7.1.3
│  └──symfony/polyfill-ctype ~1.8
│     └──php >=5.3.3
├──symfony/finder ^2.7 || ^3.0 || ^4.0
│  └──php ^7.1.3
└──symfony/process ^2.7 || ^3.0 || ^4.0
   └──php ^7.1.3

... to this (2 packages):

jean85/pretty-package-versions 1.2 A wrapper for ocramius/package-versions to get pretty versions strings
├──ocramius/package-versions ^1.2.0
│  ├──composer-plugin-api ^1.0.0
│  └──php ^7.1.0
└──php ^7.0

The reported modules (tested on this exact package) goes from this:

[
    'clue/stream-filter' => 1.4.0.0,
    'jean85/pretty-package-versions' => 1.2.0.0,
    'ocramius/package-versions' => 1.3.0.0,
    'paragonie/random_compat' => 9.99.99.0,
    'php-http/client-common' => 1.8.1.0,
    'php-http/curl-client' => 1.7.1.0,
    'php-http/discovery' => 1.4.0.0,
    'php-http/httplug' => 1.1.0.0,
    'php-http/message' => 1.7.2.0,
    'php-http/message-factory' => 1.0.2.0,
    'php-http/promise' => 1.0.0.0,
    'psr/http-message' => 1.0.1.0,
    'ramsey/uuid' => 3.8.0.0,
    'symfony/options-resolver' => 3.4.18.0,
    'symfony/polyfill-ctype' => 1.10.0.0,
    'zendframework/zend-diactoros' => 1.8.6.0,
]

.. to this:

[
    'clue/stream-filter' => v1.4.0,
    'jean85/pretty-package-versions' => 1.2,
    'ocramius/package-versions' => 1.3.0,
    'paragonie/random_compat' => v9.99.99,
    'php-http/client-common' => 1.8.1,
    'php-http/curl-client' => v1.7.1,
    'php-http/discovery' => 1.4.0,
    'php-http/httplug' => v1.1.0,
    'php-http/message' => 1.7.2,
    'php-http/message-factory' => v1.0.2,
    'php-http/promise' => v1.0.0,
    'psr/http-message' => 1.0.1,
    'ramsey/uuid' => 3.8.0,
    'symfony/options-resolver' => v3.4.18,
    'symfony/polyfill-ctype' => v1.10.0,
    'zendframework/zend-diactoros' => 1.8.6,
    'composer/ca-bundle' => 1.1.3,
    'composer/composer' => 1.7.3,
    'composer/semver' => 1.4.2,
    'composer/spdx-licenses' => 1.5.0,
    'composer/xdebug-handler' => 1.3.0,
    'doctrine/annotations' => v1.6.0,
    'doctrine/instantiator' => 1.1.0,
    'doctrine/lexer' => v1.0.1,
    'friendsofphp/php-cs-fixer' => v2.13.1,
    'justinrainbow/json-schema' => 5.2.7,
    'monolog/monolog' => 1.24.0,
    'myclabs/deep-copy' => 1.8.1,
    'nette/bootstrap' => v2.4.6,
    'nette/di' => v2.4.14,
    'nette/finder' => v2.4.2,
    'nette/neon' => v2.4.3,
    'nette/php-generator' => v3.0.5,
    'nette/robot-loader' => v3.1.0,
    'nette/utils' => v2.5.3,
    'nikic/php-parser' => v4.1.0,
    'phar-io/manifest' => 1.0.3,
    'phar-io/version' => 2.0.1,
    'php-cs-fixer/diff' => v1.3.0,
    'php-http/mock-client' => 1.1.0,
    'phpdocumentor/reflection-common' => 1.0.1,
    'phpdocumentor/reflection-docblock' => 4.3.0,
    'phpdocumentor/type-resolver' => 0.4.0,
    'phpspec/prophecy' => 1.8.0,
    'phpstan/phpdoc-parser' => 0.3,
    'phpstan/phpstan' => 0.10.5,
    'phpstan/phpstan-phpunit' => 0.10,
    'phpunit/php-code-coverage' => 6.1.4,
    'phpunit/php-file-iterator' => 2.0.2,
    'phpunit/php-text-template' => 1.2.1,
    'phpunit/php-timer' => 2.0.0,
    'phpunit/php-token-stream' => 3.0.1,
    'phpunit/phpunit' => 7.4.3,
    'psr/log' => 1.0.2,
    'sebastian/code-unit-reverse-lookup' => 1.0.1,
    'sebastian/comparator' => 3.0.2,
    'sebastian/diff' => 3.0.1,
    'sebastian/environment' => 3.1.0,
    'sebastian/exporter' => 3.1.0,
    'sebastian/global-state' => 2.0.0,
    'sebastian/object-enumerator' => 3.0.3,
    'sebastian/object-reflector' => 1.1.1,
    'sebastian/recursion-context' => 3.0.0,
    'sebastian/resource-operations' => 2.0.1,
    'sebastian/version' => 2.0.1,
    'seld/jsonlint' => 1.7.1,
    'seld/phar-utils' => 1.0.1,
    'symfony/console' => v4.1.7,
    'symfony/event-dispatcher' => v4.1.7,
    'symfony/filesystem' => v4.1.7,
    'symfony/finder' => v4.1.7,
    'symfony/phpunit-bridge' => v4.1.7,
    'symfony/polyfill-mbstring' => v1.10.0,
    'symfony/polyfill-php70' => v1.10.0,
    'symfony/polyfill-php72' => v1.10.0,
    'symfony/process' => v4.1.7,
    'symfony/stopwatch' => v4.1.7,
    'theseer/tokenizer' => 1.1.0,
    'webmozart/assert' => 1.3.0,
    'sentry/sentry' => 2.0.x-dev@95780b3,
]

All the dependencies are reported, even indirect ones, and the root package is listed last.

[HazAT]

LGTM 👍