RainMark

Refactoring IOExecutor

22

### Search before asking - [ ] I searched the [issues](https://github.com/alibaba/async_simple/issues) and found no similar issues. ### What happened + What you expected to happen Current IOExecutor has `linux-aio` related...

Add More Platform Support For Uthread

10

### Search before asking - [ ] I searched the [issues](https://github.com/alibaba/async_simple/issues) and found no similar issues. ### What happened + What you expected to happen the low level context switch...

optimize lazy collectAll implement

5

### Search before asking - [ ] I searched the [issues](https://github.com/alibaba/async_simple/issues) and found no similar issues. ### What happened + What you expected to happen https://github.com/alibaba/async_simple/blob/ab70389831cb2b9be060fd66c913833c000843fc/async_simple/coro/Collect.h#L229 ```c++ Lazy foo() {}...

### Search before asking - [x] I searched the [issues](https://github.com/alibaba/async_simple/issues) and found no similar issues. ### What happened + What you expected to happen https://github.com/alibaba/async_simple/blob/5d14230047e1e111ebc7f5a9ee963cbd940d4dd6/async_simple/coro/ViaCoroutine.h#L66 If executor's checkin method returned...