feat(platform): Implement top-up flow for PAYG System

[kcze]

WIP

Changes 🏗️

Checklist 📋

For code changes:

• I have clearly listed my changes in the PR description
• I have made a test plan
• I have tested my changes according to the test plan:
  • ...

Example test plan

• Create from scratch and execute an agent with at least 3 blocks
• Import an agent from file upload, and confirm it executes correctly
• Upload agent to marketplace
• Import an agent from marketplace and confirm it executes correctly
• Edit an agent from monitor, and confirm it executes correctly

For configuration changes:

• .env.example is updated or already compatible with my changes
• docker-compose.yml is updated or already compatible with my changes
• I have included a list of my configuration changes in the PR description (under Changes)

Examples of configuration changes

• Changing ports
• Adding new services that need to communicate with each other
• Secrets or environment variable changes
• New or infrastructure changes such as databases

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[majdyz]

Suggested change

	await User.prisma().update(
	where={"id": user_id}, data={"stripeCustomerId": customer.id}
	)
	user.stripeCustomerId = customer.id
	user = await User.prisma().update(
	where={"id": user_id}, data={"stripeCustomerId": customer.id}
	)

[majdyz]

Or even better: avoid calling Prisma here and add set_stripe_customer_id in model class on user.py

[majdyz]

So these will be webhook URLs ?

[kcze]

These are redirect urls after checkout

[majdyz]

Should we throw an error instead ?