feat: let users pass sync/async functions for resolving option values for headers/params #1935

Job	Run time
List examples	7s
List packages	5s
Check packages/typescript-client	30s
Build and test (packages/typescript-client)	1m 24s
Check packages/experimental	28s
Build and test (packages/experimental)	1m 2s
Check packages/react-hooks	35s
Build and test (packages/react-hooks)	1m 12s
Check and build examples/encryption	47s
Check and build examples/proxy-auth	52s
Check and build examples/linearlite-read-only	45s
Check and build examples/tanstack	37s
Check and build examples/linearlite	42s
Check and build examples/gatekeeper-auth	34s
Check and build examples/write-patterns	48s
Check and build examples/yjs	55s
Check and build examples/remix	42s
Check and build examples/react	37s
Check and build examples/todo-app	33s
Check and build examples/bash	26s
Check and build examples/nextjs	51s
Check and build examples/redis	30s
	15m 2s

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