Supported variable docblock

[tianyiw2013]

Change Summary:
Supported variable docblock

# Example

/** @var int $var  */
$var = 1;

/** @var stdClass $object  */
$object = new stdClass;

/** @var \Closure $callback  */
$callback = function () {};
$callback = fn () => 1;

/** @var [type] $item  */
foreach ($data as $item) {}

/** @var [type] $item  */
while ($item = array_pop($data)) {}

Checks:

• CHANGELOG.md updated with relavent changes

Related issues:
#228
#106

[neild3r]

I like the idea I'd like to spend some time with this to think about it the code layout but definitely want something like this in the package

[neild3r]

Thanks for updating test etc I will try to take a look this month

[neild3r]

Sorry I will get back to this soon