byom/byom-core-subscription: API vitrine : Stripe / subscription process @ main

lblt 66cd6106fa refactor environment configuration and remove unused mailer tests		vor 4 Monaten
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common	60b3ad55ad init onboard api	vor 5 Monaten
domain	69b2c61c30 update onboard api	vor 5 Monaten
platform	66cd6106fa refactor environment configuration and remove unused mailer tests	vor 4 Monaten