Start an OAuth install for a provider

Begins a provider install and returns the provider authorization URL, the opaque `state` token to echo back, and the expiry after which the attempt is void; the browser completes the flow at the provider and Snoze exchanges the code on the separate callback route, so no secret ever passes through this endpoint. Requires the `integrations:write` workspace permission. Fails when the provider is unknown, when the provider feature is disabled for the workspace, when the provider is manual-setup only, or when the deployment is missing the configuration that provider requires. Send an `Idempotency-Key` header to make retries safe; a replay within the window returns the original response.

curl -X POST "https://example.com/v1/workspaces/string/integrations/providers/string/install" \  -H "Content-Type: application/json" \  -d '{}'

{  "data": {    "provider": "string",    "installKind": "github_app",    "url": "string",    "state": "string",    "expiresAt": "string"  }}

{  "_tag": "ApiNotFound",  "error": "not_found",  "message": "That item does not exist, or this key cannot see it.",  "status": 404}

{  "_tag": "ApiNotFound",  "error": "not_found",  "message": "That item does not exist, or this key cannot see it.",  "status": 404}