Add inverse hyperbolic functions (#7258)

- `math arcsinh`
- `math arccosh`
- `math arctanh`

crates/nu-command/src/default_context.rs

@@ -414,6 +414,9 @@ pub fn create_default_context() -> EngineState {
             MathArcSin,
             MathArcCos,
             MathArcTan,
+            MathArcSinH,
+            MathArcCosH,
+            MathArcTanH,
             MathPi,
             MathEuler,
         };