Add public key and secret key of Stripe in admin settings page

[HungNgien]

Description: add fields in the global settings to input Stripe keys, allowing the billing information of organizers to be saved when the fields are filled.

This PR resolves #485

Summary by Sourcery

New Features:

• Allow organizers to input their Stripe keys in the global settings, enabling the platform to store their billing information.

[sourcery-ai]

Reviewer's Guide by Sourcery

This pull request adds fields for Stripe keys in the global settings admin page, enabling the storage of organizer billing information upon completion.

Class diagram for Stripe key validation and settings form

classDiagram
    class GlobalSettingsForm {
        +__init__(*args, **kwargs)
    }
    class StripeKeyValidator {
        -_prefixes: List[str]
        +__init__(prefix: Union[str, List[str]])
        +__call__(value: str)
    }
    class SecretKeySettingsField {
    }
    GlobalSettingsForm --> StripeKeyValidator : uses
    GlobalSettingsForm --> SecretKeySettingsField : uses
    note for GlobalSettingsForm "Added new Stripe Connect
key fields with validators"
    note for StripeKeyValidator "New validator class for
Stripe API key format"

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File-Level Changes

Change	Details	Files
Added fields for Stripe Connect keys	Added fields for Stripe Connect secret key (live and test) Added fields for Stripe Connect publishable key (live and test) Added a validator to ensure the keys start with the correct prefixes	src/pretix/control/forms/global_settings.py

Assessment against linked issues

Issue	Objective	Addressed	Explanation
#485	Ensure the system works without dependency on the Stripe module	✅
#485	Add 2 new fields in global settings of admin for inputting Stripe keys	✅
#485	Enable organizer billing to use Stripe keys from global settings	✅

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[sourcery-ai]

Hey @HungNgien - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟡 Security: 1 issue found
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

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[sourcery-ai]

Hey @HungNgien - I've reviewed your changes and they look great!

Here's what I looked at during the review

• 🟡 General issues: 1 issue found
• 🟡 Security: 1 issue found
• 🟢 Testing: all looks good
• 🟢 Complexity: all looks good
• 🟢 Documentation: all looks good

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook

_{Help me be more useful! Please click 👍 or 👎 on each comment and I'll use the feedback to improve your reviews.}