feat: add Microsoft Graph provider #479

Job	Run time
build-images (ui, packages/ui/Dockerfile, .)	22s
build-images (api-server, packages/api-server/Dockerfile, .)	32s
build-images (humr-base, packages/humr-base/Dockerfile, .)	29s
build-images (controller, packages/controller/Dockerfile, packages/controller)	21s
build-claude-code	0s
build-pi-agent	0s
build-code-guardian	0s
build-google-workspace-agent	0s
helm-package	0s
	1m 44s

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