[Suggestion] Remove FsUnitTyped dependency on FsUnit

[Lanayx]

Hi! I'm suggesting that for FsUnitTyped it's possible to not depend on FsUnit primitives and rather call native assertions instead. That will benefit performance, stack traces and messages. For example today:

[<Fact>]
let ``Test fsunit`` () =
    let x = [1]
    x |> shouldContain 2

Xunit.Sdk.EqualException
Assert.Equal() Failure: Values differ
Expected: Contains 2
Actual:   [1]
   at FsUnit.Xunit.raiseEqualException@16[b](StringDescription description, String value)
   at FsUnitTyped.TopLevelOperators.shouldContain[a](a expected, IEnumerable`1 actual)
   at MyTests.Test fsunit()

[<Fact>]
let ``Test native``() =
    let x = [1]
    Assert.Contains(2, x)

Xunit.Sdk.ContainsException
Assert.Contains() Failure: Item not found in collection
Collection: [1]
Not found:  2
   at MyTests.Test native()

If this change is not desired - it's not a problem, I can create a compatible package FsUnit.Light with only typed primitives over native assertions. Just wanted to check if this is something you are interested as well.

[Lanayx]

Ok, as I understand this is not desired, so I'm closing it. Also published a set of separate packages
https://www.nuget.org/packages?q=FsUnit.Light