Add CustomScopedRateThrolle throttling class #4638

Job	Run time
Prospector Static Analysis	2m 41s
Prospector Static Analysis	2m 41s
Trivy Security Checks	7m 24s
Trivy Security Checks	7m 24s
Django Unit Tests (Libraries, Main, RestServices, SMS Support, Viewer, Messaging)	8m 35s
Django Unit Tests (Libraries, Main, RestServices, SMS Support, Viewer, Messaging)	8m 35s
Django Unit Tests API	10m 41s
Django Unit Tests API	10m 22s
Django Unit Tests Logger	3m 24s
Django Unit Tests Logger	3m 24s
	1h 5m 11s

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