Update: Allow StringView to implicitly convert to ReadOnlySpan
This allows StringView to be friendly with APIs that Span, like int.TryParse(). It also removes 3 allocations, and weirdly my tests show a reduction of 4 allocations per ctor invocation on average.
Also merging stragler tag lookup into the main loop(avoids an extra traversal and extra lambda allocation).
Tests: Checked ServerBrowser, player count was sane.