Add Multi-Blind N points rankings filter

[dmint789]

We should add a number input (FormNumberInput.tsx) to all Multi-Blind rankings pages (event.format === EventFormat.Multi). This input should allow all integer numbers from 2 to infinity. On the onBlur event of this input, the user should be redirected to the rankings page with a new filter applied to it: ?multiPoints=.... The backend should then filter out all results that have a different number of points.

Keep in mind that CC stores multi results with up to 9999 points, and centiseconds are saved too. shared_helpers/interfaces/Result.ts includes some details, and utilityFunctions.test.ts has some examples of Multi-Blind attempts, as stored in the CC database.

Example: to get all 10 points results, look for attempts >= 998900000000000 and < 999000000000000.

[dmint789]

@maxidragon you want to do this one?

[maxidragon]

Yeah, you can assign it to me