Support resource subscriptions #174

Job	Run time
Client Conformance (elicitation-sep1034-client-defaults)	43s
Server Conformance	55s
Client Conformance (initialize)	56s
Client Conformance (tools_call)	39s
Client Conformance (sse-retry)	48s
Auth Conformance (auth/metadata-var1)	56s
Auth Conformance (auth/token-endpoint-auth-basic)	46s
Auth Conformance (auth/scope-from-www-authenticate)	55s
Auth Conformance (auth/scope-retry-limit)	54s
Auth Conformance (auth/scope-from-scopes-supported)	53s
Auth Conformance (auth/scope-step-up)	54s
Auth Conformance (auth/metadata-var2)	43s
Auth Conformance (auth/pre-registration)	39s
Auth Conformance (auth/basic-cimd)	51s
Auth Conformance (auth/metadata-default)	55s
Auth Conformance (auth/scope-omitted-when-undefined)	52s
Auth Conformance (auth/token-endpoint-auth-none)	57s
Auth Conformance (auth/metadata-var3)	54s
Auth Conformance (auth/token-endpoint-auth-post)	57s
	16m 7s

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