feat: add tenant management inbox workflows #31

Job	Run time
Hardcoded Secrets Detection	2s
CodeQL (.NET Backend)	33s
CodeQL (TypeScript/React)	1m 30s
Dependency Vulnerability Review	8s
NuGet Vulnerability Audit	-1s
Docker Image Security Scan	-1s
Tenant Isolation Security Tests	-1s
npm Vulnerability Audit	-1s
Security Scan Report	5s
Security Gate	3s
	2m 17s

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