Reduce dependencies

[bruno-garcia]

This will likely become multiple issues but for now to communicate the long term goal:

Vision: Have 0 dependencies.

This will improve the experience using Sentry with game engines, mobile. Avoid binding redirect issues with .NET Framework, and generally improve things.

• Move code from Sentry.Protocol to namespace Sentry.Protocol in Sentry. Archive package on NuGet. Move SentryLevel to Sentry namespace
• Move code from Sentry.PlatformAbstractions to Sentry (drop anything below ns2.0 and net461). Archive repo and project. First attempt is here: ref: platform abstraction in box #264

- [ ] Attempt to use System.Json (since it's not a dependency on netcore3.0+) See: getsentry/sentry-dotnet-protocol#42 dotnet/runtime#29975 (maybe .NET 5 introduces a easy way into it) (Seems we'll be blocked by the lack of JsonExtensionData)

• Remove System.Web reference from the netfx target. To work on Mono builds on Android (i.e https://gatomalo.dev/blog/2020/03/21/error-monitoring-godot-sentry/ ) Alternative is creating Sentry.AspNet which will bring this dependency.

RROR: get_assembly_dependencies: Cannot load assembly (refonly): 'System.Web'.
   At: modules/mono/editor/godotsharp_export.cpp:93.
ERROR: get_assembly_dependencies: Cannot load one of the dependencies for the assembly: 'Sentry'.
   At: modules/mono/editor/godotsharp_export.cpp:98.

• Docs for ASP.NET needs to be updated: https://docs.sentry.io/platforms/dotnet/guides/aspnet/

[Tyrrrz]

@bruno-garcia seems like only the last point is left on the ticket.
Looking at https://docs.sentry.io/platforms/dotnet/guides/aspnet/, the only change seems to be the initialization (i.e. SentrySdk.Init(o => o.AddAspNet())), correct?
Also, how should we sync docs with the release cycle? Seeing as this change won't be in until the next major version.

[bruno-garcia]

Good point. Maybe just leave a draft ready to be merged there? On the docs

[bruno-garcia]

Or we could merge now the following:

Note: Version 3.0.0
We're in the processes of relasing a new package, Sentry.AspNet version 3.0.

A major difference there is which package to install and how to intitalize.

Try our latest preview package and give us feedback

Then we can merge it already and at the end just kind of move the text above and delete the note about being preview?

[Tyrrrz]

Draft PR sounds better I think.
Can you point me to the docs repo again?

[bruno-garcia]

Sure: https://github.com/getsentry/sentry-docs/edit/master/src/platforms/dotnet/guides/aspnet/index.mdx

Tip: There's an edit this page link at the footer:

[Tyrrrz]

Created it here: getsentry/sentry-docs#2383