extending the authorization expression language

...ionFunctionProviders/FilterExpressionFunctionProvider.php

...essionFunctionProviders/MapExpressionFunctionProvider.php

...nFunctionProviders/PhpArrayExpressionFunctionProvider.php

...unctionProviders/PhpNumericExpressionFunctionProvider.php

...FunctionProviders/PhpStringExpressionFunctionProvider.php

src/Authorization/ExpressionLanguage/ExpressionLanguage.php

src/Authorization/UserAuthorizationChecker.php