[Php] Convert boolean value for query string (Configuration)

[ksvirkou-hubspot]

This PR creates an property in configuration "booleanFormatForQueryString"
User can set the format for conversation of boolean to the query string
user can set int (param=1 or param=0) or string (param=true or param=false)
int is default format because guzzle/psr7 converts boolean to int (param=1 or param=0)

example of use

$config = new Configuration();
$config->setBooleanFormatForQueryString(Configuration::BOOLEAN_FORMAT_STRING);
$config::setDefaultConfiguration($config);

$api = new APIClass($client, $config);

it will fix #11683

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[ksvirkou-hubspot]

@jebentier , @dkarlovi , @mandrean , @jfastnacht , @ybelenko , @renepardon

[ksvirkou-hubspot]

Any updates?
@ybelenko @wing328

[wing328]

I'm ok with it. If no further feedback/question for this PR, I'll merge it tomorrow.

Thanks for the PR.

[ybelenko]

Just checked locally under php 8.1.6:

vendor/bin/phpunit tests/ObjectSerializerTest.php
PHPUnit 9.5.20

................................................................. 65 / 65 (100%)


Time: 00:00.087, Memory: 6.00 MB

OK (65 tests, 76 assertions)

The code looks fine. 👍