Add URL elicitation support (SEP-1036) #470

Job	Run time
Client Conformance (tools_call)	44s
Client Conformance (initialize)	44s
Server Conformance	1m 1s
Client Conformance (sse-retry)	45s
Client Conformance (elicitation-sep1034-client-defaults)	44s
Auth Conformance (auth/metadata-var1)	52s
Auth Conformance (auth/basic-cimd)	44s
Auth Conformance (auth/scope-from-www-authenticate)	57s
Auth Conformance (auth/token-endpoint-auth-none)	43s
Auth Conformance (auth/metadata-var2)	44s
Auth Conformance (auth/scope-from-scopes-supported)	46s
Auth Conformance (auth/token-endpoint-auth-post)	53s
Auth Conformance (auth/scope-retry-limit)	46s
Auth Conformance (auth/scope-step-up)	41s
Auth Conformance (auth/token-endpoint-auth-basic)	59s
Auth Conformance (auth/metadata-default)	46s
Auth Conformance (auth/pre-registration)	46s
Auth Conformance (auth/metadata-var3)	43s
Auth Conformance (auth/scope-omitted-when-undefined)	33s
	14m 51s

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