Conformance testing: add auth conformance testing #105

Job	Run time
Client Conformance (tools_call)	3m 5s
Client Conformance (initialize)	1m 36s
Auth Conformance (auth/scope-retry-limit)	1m 28s
Auth Conformance (auth/token-endpoint-auth-post)	1m 29s
Auth Conformance (auth/scope-from-www-authenticate)	1m 35s
Auth Conformance (auth/pre-registration)	1m 40s
Auth Conformance (auth/metadata-default)	1m 43s
Auth Conformance (auth/scope-from-scopes-supported)	1m 32s
Auth Conformance (auth/token-endpoint-auth-basic)	1m 27s
Auth Conformance (auth/metadata-var1)	1m 43s
Auth Conformance (auth/token-endpoint-auth-none)	1m 41s
Auth Conformance (auth/scope-omitted-when-undefined)	1m 37s
Auth Conformance (auth/metadata-var2)	1m 36s
Auth Conformance (auth/scope-step-up)	1m 43s
Auth Conformance (auth/basic-cimd)	1m 43s
Auth Conformance (auth/metadata-var3)	1m 43s
Client Conformance (elicitation-sep1034-client-defaults)	1m 50s
Server Conformance	2m 1s
Client Conformance (sse-retry)	1m 46s
	32m 58s

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