feat: Adding a tenantRegistrationId column to tenantManagementTable

[Hoseong-Seo]

Issue # (if applicable)

Closes #.

Reason for this change

• Tenant management table lacks tenantRegistrationId
• SaaS provider UI (Admin) should display tenant information
• Tenant removal API call from UI is hindered without tenantRegistrationId

Description of changes

The create_tenant_registration of Tenant Registration Lambda.

• Add tenantRegistrationId value to tenant_data dictionary
• Removed tenantRegistrationId from __create_control_plane_event

Description of how you validated changes

• Tenant Removal test from UI.

Checklist

• My code adheres to the CONTRIBUTING GUIDE
• I have updated the relevant documentation (if applicable).

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[suhussai]

@Hoseong-Seo , thanks for the update! Can you also update the sample onboarding event in the README so that it has the latest changes? It's here:

sbt-aws/docs/public/README.md

Lines 633 to 645 in 1a7cdeb

	```json
	{
	"source": "controlPlaneEventSource",
	"detail-type": "onboardingRequest",
	"detail": {
	"tenantId": "guid string",
	"tenantName": "tenant$RANDOM",
	"email": "[email protected]",
	"tier": "basic",
	"tenantStatus": "In progress"
	}
	}
	```