feat: LlamaParseReader: update supported file types, add support for array of file Paths, add support for directory Paths + example #4224

Job	Run time
typecheck	2m 16s
Build Core Example (cloudflare-worker-agent)	43s
Test on Node.js 18.x	36s
Build Core Example (nextjs-agent)	32s
E2E on Node.js 18.x	40s
Test on Node.js 20.x	36s
Build Core Example (nextjs-edge-runtime)	37s
E2E on Node.js 20.x	41s
typecheck-examples	34s
Test on Node.js 22.x	35s
Build Core Example (waku-query-engine)	31s
E2E on Node.js 22.x	40s
	9m 1s

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