Migrate to .NET 10: add shared build config, CI, embedded stealth scripts, and tests#1

KSemenenko merged 3 commits intomainmanagedcode/playwright_stealth:mainfrom

codex/create-open-source-nuget-package-with-playwrightmanagedcode/playwright_stealth:codex/create-open-source-nuget-package-with-playwrightCopy head branch name to clipboard