feat: let users pass sync/async functions for resolving option values for headers/params #1934

Job	Run time
List packages	9s
List examples	4s
Check packages/typescript-client	31s
Build and test (packages/typescript-client)	1m 24s
Check packages/experimental	27s
Build and test (packages/experimental)	1m 10s
Check packages/react-hooks	29s
Build and test (packages/react-hooks)	1m 12s
Check and build examples/encryption	34s
Check and build examples/proxy-auth	51s
Check and build examples/linearlite-read-only	43s
Check and build examples/tanstack	41s
Check and build examples/linearlite	47s
Check and build examples/gatekeeper-auth	28s
Check and build examples/write-patterns	41s
Check and build examples/yjs	53s
Check and build examples/remix	36s
Check and build examples/react	34s
Check and build examples/todo-app	40s
Check and build examples/bash	23s
Check and build examples/nextjs	52s
Check and build examples/redis	35s
	14m 44s

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