feat: EF 6 Query as Span.

[lucas-zimerman]

This PR allows the SDK to automatically create Spans for operations related to Entity Framework.

For keeping the pattern with DiagnosticSource, I have edited some names for better understanding:
ReaderExecuting will result on a span with operation "db.query"
ScalarExecutingwill result on a span with operation "db.query-scalar"
NonQueryExecutingwill result on a span with operation "db.execute"

Samples:

https://sentry.io/organizations/sentry-sdks/discover/sentry-dotnet:a6e624483558476bbf4e3a8ec3c1f477/?field=title&field=event.type&field=project&field=user.display&field=timestamp&name=All+Events&query=&sort=-timestamp&statsPeriod=1h&user=314270&yAxis=count%28%29

https://sentry.io/organizations/sentry-sdks/discover/sentry-dotnet:a7faaa0dde1c43fa95948bda62d3606f/?field=title&field=event.type&field=project&field=user.display&field=timestamp&name=All+Events&query=&sort=-timestamp&statsPeriod=1h&user=314270&yAxis=count%28%29

https://sentry.io/organizations/sentry-sdks/discover/sentry-dotnet:72a5884526174201aa0575a01bb780a1/?field=title&field=event.type&field=project&field=user.display&field=timestamp&name=All+Events&query=&sort=-timestamp&statsPeriod=1h&user=314270&yAxis=count%28%29

Close #1173.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 82.85714% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.61%. Comparing base (b624635) to head (b47c7ee).
⚠️ Report is 1971 commits behind head on main.

Files with missing lines	Patch %	Lines
....EntityFramework/SentryQueryPerformanceListener.cs	76.19%	3 Missing and 2 partials ⚠️
.../Sentry.EntityFramework/SentryOptionsExtensions.cs	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1107      +/-   ##
==========================================
+ Coverage   82.60%   82.61%   +0.01%     
==========================================
  Files         212      215       +3     
  Lines        7116     7150      +34     
  Branches     1401     1407       +6     
==========================================
+ Hits         5878     5907      +29     
- Misses        804      808       +4     
- Partials      434      435       +1     

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[lucas-zimerman]

@bruno-garcia This integration will work on .NET Standard 2.1.
On, NET461 there isn't much to be done with the current version of EntityFramework. BUT, we could update it on NET461 from 6.0.0 to 6.2.0 and it should work.

[github-actions]

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[bruno-garcia]

BUT, we could update it on NET461 from 6.0.0 to 6.2.0 and it should work.

We need to make this work with 4.6.1 so if we need to bump the min EF version then lets do that

6.2.0 is from 2017 so definitely not a problem: https://www.nuget.org/packages/EntityFramework/6.2.0

[lucas-zimerman]

BUT, we could update it on NET461 from 6.0.0 to 6.2.0 and it should work.

We need to make this work with 4.6.1 so if we need to bump the min EF version then lets do that

6.2.0 is from 2017 so definitely not a problem: https://www.nuget.org/packages/EntityFramework/6.2.0

That's great cus that's what I did :D (Increased EF version to 6.2.0 on NET461)