Add demo section to README for Reloader

[msafwankarim]

Added a demo section with a gif to showcase Reloader.

[github-actions]

✅ Load Test Results (quick)

✅ Load Test Results: ALL TESTS PASSED

🚀 Quick Test (S1, S4, S6) — Use /loadtest for full suite

3/3 passed (100%)

	Scenario	Description	Actions	Errors
✅	S1	S1: 143 burst updates, each triggers 1 dep...	143/143	0
✅	S4	S4: 143 no-op updates, all should be skipped	0	0
✅	S6	S6: Restart test - 142 updates during restart	145	0

📦 Download detailed results

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Artifacts: Download