add a show method for the warped metric so it prints nicer on REPL

src/manifolds/SegreWarpedMetric.jl

@@ -27,12 +27,12 @@
     return WarpedMetric{A}()
 end
 
 function connected_by_geodesic(
     M::MetricManifold{ℝ,Segre{ℝ,V},WarpedMetric{A}},
     p,
     q,
 ) where {V,A}
     return connected_by_geodesic(M.manifold, p, q)
 end
 
 function closest_representative!(
@@ -308,6 +308,10 @@
            (inner(M, p, u, u) * inner(M, p, v, v) - inner(M, p, u, v)^2)
 end
 
+function show(io::IO, ::WarpedMetric{A}) where {A}
+    return print(io, "WarpedMetric($A)")
+end
+
 function spherical_angle_sum(
     M::MetricManifold{ℝ,Segre{ℝ,V},WarpedMetric{A}},
     p,