feat/auth: Authentication implementation #433

Job	Run time
Test (macos-latest, Swift 6.1.0)	5m 1s
MCP Conformance Tests	3m 9s
Documentation	3m 7s
Linux Static SDK Build (6.1.2 - ubuntu-latest)	1m 59s
Test (ubuntu-latest, Swift 6.1.0)	2m 11s
	15m 27s

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