Update `sentry-docs` with Configuration/Filtering for Sentry Logs integrations

[Flash0ver]

Description

Document the (behavioral breaking) changes from #4700.

See

• fix(logs): minimum Log-Level for Structured Logs #4700 (comment)
• fix(logs): minimum Log-Level for Structured Logs #4700 (comment)

Also add to v6-Migration-Guide.

Document

• Breadcrumbs and Events via
  • SentryLoggingOptions.MinimumBreadcrumbLevel
  • SentryLoggingOptions.MinimumEventLevel
  • SentryLoggingOptionsExtensions.AddLogEntryFilter
• Structured Logs via
  • appsettings.json
  • appsettings.{HostEnvironment}.json
  • logging.AddFilter("Microsoft", LogLevel.Warning);
  • ...

See also

• fix(logs): minimum Log-Level for Structured Logs #4700 (comment)

[linear]

NET-541