Upgrade project to .NET 10 (net10.0-windows)

[ndavat]

Migrate InfluxDB Studio from .NET Framework 4.6.1 to .NET 10, targeting net10.0-windows only. The project was previously partially migrated on this branch; this commit completes a clean, working upgrade.

Project system

• Convert CymaticLabs.InfluxDB.Studio.csproj to SDK-style (was legacy MSBuild/VS2015 format, ~600 lines reduced to a small SDK project).
• Replace packages.config with PackageReference items.
• Enable Windows Forms via true.
• Set false (kept existing AssemblyInfo.cs) and 7.0.

Package upgrades

• InfluxData.Net 8.0.1 (from 6.0.5)
• Scintilla5.NET 7.0.0 (replaces ScintillaNET)
• log4net 3.3.2
• Newtonsoft.Json 13.0.4
• System.Configuration.ConfigurationManager 10.0.11

Code changes

• SslIgnoreValidator: replace the obsolete ServicePointManager / ServerCertificateValidationCallback approach with an HttpClient built on HttpClientHandler.ServerCertificateCustomValidationCallback, applied per-client when AllowUntrusted is enabled.
• InfluxDataNetClient: use the 7-argument InfluxDbClient constructor with QueryLocation.FormData, the dedicated HttpClient, and throwOnWarning=false.
• App.config: removed the legacy and sections; switched the userSettings section handler to System.Configuration.ClientSettingsSection (System.Configuration.ConfigurationManager), keeping the log4net section.
• Scintilla designer files (ContinuousQueryControl, QueryControl, RunningQueriesControl, BackFillDialog, CreateContinuousQueryDialog): replaced the removed Lexer = ScintillaNET.Lexer.Sql API with LexerName = "sql".
• AboutDialog.cs: replaced the deprecated Process.Start(string) overloads with Process.Start(new ProcessStartInfo { FileName, UseShellExecute = true }).

Build fixes

• Suppressed WFO1000 (Windows Forms designer property-serialization errors for runtime-assigned custom properties) via .
• Added [assembly: SupportedOSPlatform("Windows")] in AssemblyInfo.cs to silence CA1416 Windows-only API warnings.
• Added NU1510 to for transitive package-version upper bounds.

Attribution / versioning

• Replaced the original author credit with "ndavat" in AssemblyInfo.cs (AssemblyCopyright), AboutDialog copyright label, and LICENSE.
• Bumped assembly version 0.2.0.0 -> 0.3.0.0.
• Updated project GitHub links to ndavat/InfluxDBStudio in README.md and AboutDialog.cs; left third-party links (InfluxData.Net) unchanged.
• README.md: documented .NET 10 SDK / VS 2022 prerequisites, build command, and run path; added current build/version note and ndavat copyright line.

Verification

• dotnet build -c Debug and -c Release succeed with 0 errors (one pre-existing benign CS0169 warning remains).
• Native Scintilla.dll is correctly deployed to runtimes/win-x64/native on build.

[mr-manuel]

Could you port this to my fork? https://github.com/mr-manuel/InfluxDBStudio

[ndavat]

Could you port this to my fork? https://github.com/mr-manuel/InfluxDBStudio

Here is PR - mr-manuel#5

[mr-manuel]

Thanks, it was merged on my branch. This makes it now also possible to integrate a dark mode.