Rework Stardew Valley diagnostics

[erri120]

Using the new diagnostic system, this PR updates/adds the following diagnostics:

• Mod {Mod} is missing required dependency {MissingDependency}
• Mod {Dependent} requires at least version {MinimumVersion} of {Dependency} but installed is {CurrentVersion}

Both of these diagnostics work for mod and content pack dependencies.

Resolves #915.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 3.42857% with 169 lines in your changes are missing coverage. Please review.

Project coverage is 57.02%. Comparing base (9f8e770) to head (15f1603).

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1007      +/-   ##
==========================================
- Coverage   58.19%   57.02%   -1.18%     
==========================================
  Files         644      643       -1     
  Lines       21069    21024      -45     
  Branches     1650     1638      -12     
==========================================
- Hits        12261    11988     -273     
- Misses       8411     8654     +243     
+ Partials      397      382      -15     

Flag	Coverage Δ
Linux	56.24% <3.42%> (-1.26%)	⬇️
Windows	56.23% <3.42%> (-1.18%)	⬇️
clean_environment_tests	57.00% <3.42%> (-1.18%)	⬇️
macOS	55.70% <3.42%> (-1.20%)	⬇️
networking_tests	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...c/Games/NexusMods.Games.StardewValley/Constants.cs	0.00% <ø> (-100.00%)	⬇️
...rc/Games/NexusMods.Games.StardewValley/Services.cs	100.00% <100.00%> (ø)
.../Games/NexusMods.Games.StardewValley/TypeFinder.cs	100.00% <100.00%> (ø)
...cs/DiagnosticTemplateIncrementalSourceGenerator.cs	81.14% <100.00%> (-1.02%)	⬇️
...mes/NexusMods.Games.StardewValley/StardewValley.cs	22.22% <0.00%> (-46.67%)	⬇️
...ractions.Loadouts/Extensions/AModFileExtensions.cs	0.00% <0.00%> (ø)
src/Games/NexusMods.Games.StardewValley/Interop.cs	0.00% <0.00%> (ø)
...Games/NexusMods.Games.StardewValley/Diagnostics.cs	0.00% <0.00%> (-100.00%)	⬇️
...ames.StardewValley/Installers/SMAPIModInstaller.cs	0.00% <0.00%> (-92.50%)	⬇️
...rdewValley/Emitters/DependencyDiagnosticEmitter.cs	0.00% <0.00%> (ø)

... and 5 files with indirect coverage changes