feat: Don't dedupe from inner exception

[bruno-garcia]

Adds modes to de-duplication of events.
Removes the dedupe for inner exceptions.

The mains driver is EF Core that logs an exception like this:

An exception occurred while iterating over the results of a query for context type '"NuGetTrends.Data.NuGetTrendsContext"'."
""System.InvalidCastException: Column is null
   at Npgsql.NpgsqlDataReader.GetFieldValue[T](Int32 ordinal)
   at lambda_method(Closure , QueryContext , DbDataReader , ResultContext , Int32[] , ResultCoordinator )
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.AsyncEnumerator.MoveNextAsync()"

And rethrows. When Sentry wants to log it, it's dropped by the dedupe.

The stack trace from the EF Core entry is useless to the app developer, oesn't lead to the code that started the query.

Deduping InnerExceptions can be opt-in again via:

SentryOptions.DeduplicateMode |= DeduplicateMode.InnerException; 

[codecov-io]

Codecov Report

Merging #363 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #363      +/-   ##
==========================================
+ Coverage   93.32%   93.33%   +<.01%     
==========================================
  Files         117      117              
  Lines        2802     2806       +4     
==========================================
+ Hits         2615     2619       +4     
  Misses        187      187

Impacted Files	Coverage Δ
.../Internal/DuplicateEventDetectionEventProcessor.cs	96.55% <100%> (+0.39%)	⬆️
src/Sentry/SentryOptions.cs	97.93% <100%> (+0.02%)	⬆️

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