feat: offline billing accounts in org

[kushsharma]

• Offline billing accounts are not registered in billing provider like Stripe by default.
• Only online b/a can use CheckoutAPI so when requesting to create new Checkout, it will automatically try to register the billing account to provider if it is offline
• DelegatedCheckout with virtual credits can be used with offline customers
• Offline customers will not interact with billing provider at all and can't support subscriptions as well
• A offline customer can be migrated to online using RegisterBillingAccount API
• feat(frontier): create billing account without billing provider proton#360
• A change in frontier env/yaml configs are introduced to handle offline accounts better

billing:
  # default currency to be used for billing if not provided by the user
  # e.g. usd, inr, eur
  default_currency: "inr"
  # billing customer account configuration
  customer:
    # automatically create a default customer account when an org is created
    auto_create_with_org: true
    # name of the plan that should be used subscribed automatically when the org is created
    # it also automatically creates an empty billing account under the org
    default_plan: ""
    # default offline status for the customer account, if true the customer account
    # will not be registered in billing provider
    default_offline: false
    # free credits to be added to the customer account when created as a part of the org
    onboard_credits_with_org: 0

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Name	Status	Preview	Comments	Updated (UTC)
frontier	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 7, 2024 1:00pm

[coveralls]

Pull Request Test Coverage Report for Build 9381349099

Details

• 12 of 1824 (0.66%) changed or added relevant lines in 13 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.04%) to 9.38%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
billing/subscription/service.go	0	1	0.0%
billing/customer/customer.go	0	3	0.0%
billing/checkout/service.go	0	4	0.0%
internal/store/postgres/billing_customer_repository.go	10	14	71.43%
pkg/server/interceptors/authorization.go	0	4	0.0%
internal/api/v1beta1/billing_customer.go	0	12	0.0%
core/event/service.go	0	21	0.0%
proto/v1beta1/frontier_grpc.pb.go	0	26	0.0%
billing/customer/service.go	0	30	0.0%
internal/api/v1beta1/mocks/customer_service.go	0	50	0.0%

Files with Coverage Reduction	New Missed Lines	%
internal/api/v1beta1/mocks/customer_service.go	1	10.34%

Totals
Change from base Build 9361738958:	0.04%
Covered Lines:	9638
Relevant Lines:	102755

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9402997861

Details

• 12 of 1838 (0.65%) changed or added relevant lines in 14 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.04%) to 9.381%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
billing/subscription/service.go	0	1	0.0%
cmd/serve.go	0	1	0.0%
billing/customer/customer.go	0	3	0.0%
billing/checkout/service.go	0	4	0.0%
internal/store/postgres/billing_customer_repository.go	10	14	71.43%
pkg/server/interceptors/authorization.go	0	4	0.0%
internal/api/v1beta1/billing_customer.go	0	12	0.0%
proto/v1beta1/frontier_grpc.pb.go	0	26	0.0%
billing/customer/service.go	0	30	0.0%
core/event/service.go	0	34	0.0%

Files with Coverage Reduction	New Missed Lines	%
internal/api/v1beta1/mocks/customer_service.go	1	10.34%

Totals
Change from base Build 9381599834:	0.04%
Covered Lines:	9641
Relevant Lines:	102770

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9402923486

Details

• 12 of 1838 (0.65%) changed or added relevant lines in 14 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage increased (+0.04%) to 9.381%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
billing/subscription/service.go	0	1	0.0%
cmd/serve.go	0	1	0.0%
billing/customer/customer.go	0	3	0.0%
billing/checkout/service.go	0	4	0.0%
internal/store/postgres/billing_customer_repository.go	10	14	71.43%
pkg/server/interceptors/authorization.go	0	4	0.0%
internal/api/v1beta1/billing_customer.go	0	12	0.0%
proto/v1beta1/frontier_grpc.pb.go	0	26	0.0%
billing/customer/service.go	0	30	0.0%
core/event/service.go	0	34	0.0%

Files with Coverage Reduction	New Missed Lines	%
internal/api/v1beta1/mocks/customer_service.go	1	10.34%

Totals
Change from base Build 9381599834:	0.04%
Covered Lines:	9641
Relevant Lines:	102770

---

💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 9417411053

Details

• 514 of 5274 (9.75%) changed or added relevant lines in 14 files are covered.
• 108 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.03%) to 9.312%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
billing/subscription/service.go	0	1	0.0%
cmd/serve.go	0	1	0.0%
billing/customer/customer.go	0	3	0.0%
billing/checkout/service.go	0	4	0.0%
internal/store/postgres/billing_customer_repository.go	10	14	71.43%
pkg/server/interceptors/authorization.go	0	16	0.0%
internal/api/v1beta1/billing_customer.go	1	31	3.23%
core/event/service.go	0	44	0.0%
billing/customer/service.go	0	52	0.0%
proto/v1beta1/frontier_grpc.pb.go	0	78	0.0%

Files with Coverage Reduction	New Missed Lines	%
internal/api/v1beta1/mocks/customer_service.go	1	8.52%
core/event/service.go	2	0.0%
proto/v1beta1/frontier.pb.go	105	5.78%

Totals
Change from base Build 9381599834:	-0.03%
Covered Lines:	9642
Relevant Lines:	103546

---

💛 - Coveralls