feat(integrations): add supermemory Stripe catalog provider

[snowmead]

Summary

• Adds the supermemory Stripe Projects catalog integration family as CatalogResource adapter(s).
• Follows docs/ADDING-A-PROVIDER.md and docs/PROVIDER-WAVES.md.
• Includes gap test + hermetic provision test. OUTPUT_FIELDS provisional until mise run discover.

Test plan

• Gap + hermetic tests in module
• Live mise run discover when provider is linked
• Merge after resolving additive registry.rs conflict with other family PRs

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Note

Low Risk
Additive managed integration with offline tests and no changes to auth or existing providers; provisional output envelope is the main follow-up before live smoke.

Overview
Adds a Supermemory Phase 1 catalog integration for supermemory/memory, so stacks can declare provider = "supermemory" with a required plan tier and reference ${integrations.*.api_key} after Stripe Projects provisioning.

The adapter is a standard managed CatalogResource: registered in register_providers!, wired through providers/supermemory, with catalog gap and hermetic provision tests. OUTPUT_FIELDS for api_key are provisional until live mise run discover.

Supporting changes in the same PR extend stackless-provider-sdk with optional/required integer and boolean config helpers for upcoming catalog modules, document the provider wave rollout (PROVIDER-WAVES.md, DECISIONS.md, link from ADDING-A-PROVIDER.md), and add scripts/generate_catalog_integrations.py to scaffold remaining deployables.

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