Added Column search criterion

[adamwojs]

JIRA: -

Description

Added \Ibexa\Contracts\FieldTypeMatrix\Search\Criterion\Column search criterion which allows to filter content items/locations by ezmatrix column value. Example:

$query = new Query();
$query->filter = new Column(
    'employees',
    'team',
    Operator::EQ,
    'QA'
);

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[JeromeBenedetti]

Hello @adamwojs , I wanted to thank you for this work! I work with @YohannsMonnier from Inforca and your PR helped me unblock a situation!
Thanks again for your help!

[konradoboza]

@adamwojs is any work still needed here?