Refactor to remove "Async" function name suffix

Remove convention where Async suffix is added to functions that returns
a Promise. It was a habit from C#, but is not widely used in JavaScript
/ TypeScript world, also bloats the code. The code is more consistent
with third party dependencies/frameworks without the suffix.

src/infrastructure/Threading/AsyncSleep.ts

@@ -1,5 +1,5 @@
 export type SchedulerType = (callback: (...args: any[]) => void, ms: number) => void;
 
-export function sleepAsync(time: number, scheduler: SchedulerType = setTimeout) {
+export function sleep(time: number, scheduler: SchedulerType = setTimeout) {
     return new Promise((resolve) => scheduler(() => resolve(undefined), time));
 }