Use string.StartsWith instead of IndexOf comparison

Proprietary

Replace s.IndexOf(x) == 0 with s.StartsWith(x).

OpenRewrite.Recipes.CSharp.CodeQuality.Simplification.UseStringStartsWith

mod run . --recipe=OpenRewrite.Recipes.CSharp.CodeQuality.Simplification.UseStringStartsWith

Install it once, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.