feature #1070 add more IBindingTypeConverter implementations

[ChrisPulman]

What kind of change does this PR introduce?

feature add more IBindingTypeConverter implementations #1070

What is the current behaviour?

only a few IBindingTypeConverter implementations exist

What is the new behaviour?

common type converters added

What might this PR break?

none expected as if a user registers their own it should be resolved instead of the base functions
They may need to raise the affinity value above our base level of 10.

Please check if the PR fulfils these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Other information:

[codecov]

Codecov Report

Merging #2869 (a2bb864) into main (ea20555) will increase coverage by 0.42%.
The diff coverage is 84.00%.

@@            Coverage Diff             @@
##             main    #2869      +/-   ##
==========================================
+ Coverage   71.79%   72.22%   +0.42%     
==========================================
  Files         139      140       +1     
  Lines        4890     4926      +36     
==========================================
+ Hits         3511     3558      +47     
+ Misses       1379     1368      -11     

Impacted Files	Coverage Δ
.../Bindings/Converter/SingleToStringTypeConverter.cs	61.90% <61.90%> (ø)
src/ReactiveUI.Winforms/Registrations.cs	82.35% <100.00%> (-9.96%)	⬇️
src/ReactiveUI.Wpf/Registrations.cs	82.35% <100.00%> (-9.96%)	⬇️
src/ReactiveUI.XamForms/Registrations.cs	87.50% <100.00%> (+12.50%)	⬆️
...Bindings/Converter/DecimalToStringTypeConverter.cs	100.00% <100.00%> (+52.38%)	⬆️
.../Bindings/Converter/DoubleToStringTypeConverter.cs	90.47% <100.00%> (+90.47%)	⬆️
src/ReactiveUI/Registration/Registrations.cs	93.33% <100.00%> (+1.66%)	⬆️
...ReactiveUI/Platforms/net5/PlatformRegistrations.cs	57.14% <0.00%> (-28.58%)	⬇️
... and 4 more

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[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.