feat: let users pass sync/async functions for resolving option values for headers/params #1937

Job	Run time
List packages	7s
List examples	7s
Check packages/typescript-client	29s
Build and test (packages/typescript-client)	1m 23s
Check packages/experimental	30s
Build and test (packages/experimental)	1m 20s
Check packages/react-hooks	29s
Build and test (packages/react-hooks)	1m 11s
Check and build examples/encryption	33s
Check and build examples/proxy-auth	52s
Check and build examples/linearlite-read-only	44s
Check and build examples/tanstack	38s
Check and build examples/linearlite	44s
Check and build examples/gatekeeper-auth	28s
Check and build examples/write-patterns	40s
Check and build examples/yjs	1m 1s
Check and build examples/remix	35s
Check and build examples/react	34s
Check and build examples/todo-app	41s
Check and build examples/bash	22s
Check and build examples/nextjs	58s
Check and build examples/redis	29s
	14m 55s

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