feat: async timers #266
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feat: async timers #266
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feat(kernel): implement timers feat(loader): pass `rng_seed` to kernel feat(kernel): implement timers
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This PR adds support for async timers to scheduler, users can call
sleeporsleep_untiland the task (only works inside tasks) will be suspended until the timer runs out. This is implemented through per-worker timer wheels that multiplex a potentially quite large number of timers. These timer wheels will be used by the workers to determine the next timeout (if any)