Refactor/load balance & easy days

[L-M-Sherlock]

The load balance and easy days features are refactored in the way discussed in:

• https://github.com/open-spaced-repetition/load-balance-simulator/issues/1#issuecomment-2361674400
• https://github.com/open-spaced-repetition/easy-days-simulator/issues/1#issuecomment-2294822529
• https://github.com/ankitects/anki/issues/3116#issuecomment-2295243077

Patch: fsrs4anki-helper.ankiaddon.zip

Preview:

[Expertium]

I don't see why you are doing this in the first place. If Easy Days and Load Balance will work the same way both natively and in the add-on, what reason would there be to keep both? If one offers different pros and cons, sure. But if the add-on versions and the native versions are the same, why keep duplicate functionality?

[L-M-Sherlock]

Firstly, I don't know when the Easy Days will be implemented natively. Secondly, implementing it in the add-on could help us test the method easily. Finally, someone ask for this feature, and I'd like to check the method.

[L-M-Sherlock]

By the way, it really helped me improve the method of easy days.

Before https://github.com/open-spaced-repetition/fsrs4anki-helper/pull/461/commits/43a61aa4e747bc39df9a107c1065ec25a285579e:

After https://github.com/open-spaced-repetition/fsrs4anki-helper/pull/461/commits/43a61aa4e747bc39df9a107c1065ec25a285579e:

It is closer to 50% (reduce mode) than previous one.

[brishtibheja]

@expertium a lot of users don't update and intentionally/unintentionally keep themselves on old versions. So it might be useful for them.

edit: "set the review ratio for each day of the week" should be "set the review amount..." ratio is weird now.

[Expertium]

I would replace "Reduce" with "Reduced" and "Minimize" with "Minimum".