Add units to RotationalStiffness, VolumePerLength, ForcePerLength

[ajphall]

In addition to adding the additional units I also made a change in the VolumePerLength BaseDimensions to change it from L=3 to L=2. I'm not sure if I misunderstood something, but if its m^3 / m then I'm not sure how it can be L=3. Maybe you did this to avoid ambiguity with area? I checked in the original PR (#604) and cannot find any explanation why its like this.

[angularsen]

Verified all the conversions.
A couple suggestions to rename some units. Make sure to run generate-code.bat once more and you probably have to manually rename the properties in the test code.

[codecov-io]

Codecov Report

Merging #776 into master will increase coverage by 0.34%.
The diff coverage is 100.00%.

@@ Coverage Diff @@## master #776 +/- ##
==========================================
+ Coverage 63.47% 63.82% +0.34% 
==========================================
Files 278 278 Lines 41087 41477 +390 ==========================================
+ Hits 26081 26471 +390 
Misses 15006 15006 

Impacted Files	Coverage Δ
UnitsNet/GeneratedCode/UnitAbbreviationsCache.g.cs	100.00% <ø> (ø)
...eneratedCode/NumberToForcePerLengthExtensions.g.cs	100.00% <100.00%> (ø)
...tedCode/NumberToRotationalStiffnessExtensions.g.cs	100.00% <100.00%> (ø)
...neratedCode/NumberToVolumePerLengthExtensions.g.cs	100.00% <100.00%> (ø)
...tsNet/GeneratedCode/Quantities/ForcePerLength.g.cs	66.12% <100.00%> (+5.84%)	⬆️
.../GeneratedCode/Quantities/RotationalStiffness.g.cs	70.88% <100.00%> (+18.89%)	⬆️
...sNet/GeneratedCode/Quantities/VolumePerLength.g.cs	54.43% <100.00%> (+2.11%)	⬆️
UnitsNet/GeneratedCode/UnitConverter.g.cs	100.00% <100.00%> (ø)

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[ajphall]

Thanks for tidying up the tests..looks much better!

I updated the unit naming in the Rotational Stiffness as suggested. I also updated the names of some of the other units in the same file to keep everything following a consistent convention.

[angularsen]

Great initiative, however this would be a breaking change and not something we can do.
I propose reverting these and adding a comment in #563 to address it there.

[angularsen]

Good catch

[angularsen]

Thanks a lot, a new nuget is on the way.

Release UnitsNet/4.58.0 · angularsen/UnitsNet

[ajphall]

Great, thanks a lot. I will make a note in the linked issue as requested.