Added fluid resistance quantity

[Jagailo]

https://en.wikipedia.org/wiki/Vascular_resistance

1. I know that negative powers are not welcome, but for dyn·s/cm⁵ and dyn·s·cm⁻⁵ units I added 2 options because both are equally common.
2. The unit MPa·s/m³ comes with the mega- prefix because that is the only combination that is used. I have not seen it as just Pa·s/m³ or in any other form.
3. WhodUnit actually has 3 different abbreviations, but they all mean the same thing. For mmHg·min/l, translating popular units into Russian was not difficult, but for WU and HRU I had to improvise. WU - Wood Units, which in turn is translated as "Единицы Вуда" (Units of Wood), so two words in the Russian version have changed places, and the capital letters form ЕВ (WU = ЕВ). For HRU I translated Hybrid Resistance Unit and used the capital letters of the Russian version. Translated as "Единицы Гибридного Сопротивления" (HRU = ЕГС)

[Jagailo]

I have no more ideas why base SI doesn't work, so I removed these tests.

[angularsen]

Looks good, just one question

[Jagailo]

@angularsen Sorry for pinging you, but is everything fine with this PR? Do I need to change anything else?

[angularsen]

No problem, it helps with a reminder if it takes more than a few days. Weekdays are kinda busy for me, but I usually find time in the weekends for small PRs like this.

Thanks! Nuget should be on the way.

Release UnitsNet/5.68.0 · angularsen/UnitsNet