Send client_reference_id with PurchaseRequest#220

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chargePanelAndreas wants to merge 4 commits intothephpleague:masterfrom chargePanelAndreas:master

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Commits on Aug 26, 2022

Commits on Aug 29, 2022

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Commits on Jan 10, 2024

Some parameters made optional (thephpleague#218 )

EnesSacid-Buker
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