add createAndAppend to AssertionContainer expecting Translatable

[robstoll]

and no longer rely on assertionBuilder.createDescriptive as it will
be removed in 0.18.0

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[codecov]

Codecov Report

Merging #1061 (0151dc7) into main (2471c4f) will decrease coverage by 0.07%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #1061      +/-   ##
============================================
- Coverage     90.59%   90.51%   -0.08%     
  Complexity      107      107              
============================================
  Files           448      448              
  Lines          4666     4672       +6     
  Branches        221      221              
============================================
+ Hits           4227     4229       +2     
- Misses          390      394       +4     
  Partials         49       49              

Flag	Coverage Δ
bc	84.82% <0.00%> (-0.11%)	⬇️
current	87.02% <100.00%> (-0.07%)	⬇️
current_windows	86.17% <100.00%> (-0.07%)	⬇️

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Impacted Files	Coverage Δ
...n/ch/tutteli/atrium/creating/AssertionContainer.kt	100.00% <100.00%> (ø)
...eli/atrium/assertions/builders/AssertionBuilder.kt	45.45% <0.00%> (-36.37%)	⬇️

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