Keep track of Weight v1.5 and Weight v2 from Substrate

[BillyWooo]

Context

New version of Weight will be introduced in new Substrate release.

Follow this PR and forum discussion.

Task

Keep track of new release and update accordingly.

Acceptance criteria

As usual, CI should pass after the update.

---

✔️ Please set appropriate labels and assignees if applicable.

[Kailai-Wang]

This issue can be served as the epic and we can add subtasks as bullet points into it (e.g. changes needed to fix the compilation due to v1.5 introduction later).

We might need a sharing session about these too.

[Marky-Shi]

The PR that some basic arithmetic operations are impl for weight.
The PR that add storage size component to weights.
The PR that set the max proof size weight on defaults and tests.
The PR that remove ord impl for weight V2 and use comparsion fns instead.
Then we can pay attention to the progress of this issue, it basically covers all the progress of weight V2 development.