Goal: Implement `ReplaceAll<S, From, To>` which replace the all the substring `From` with `To` in the given string `S`. For example: Source challenge: https://github.com/type-challenges/type-challenges/tree/main/questions/00119-medium-replaceall Reference explanation: https://github.com/ghaiklor/type-challenges-solutions/blob/main/en/medium-replaceall.md