Add cross_value function

pandas_ta/core.py

@@ -988,6 +988,15 @@ class AnalysisIndicators(BasePandasObject):
             self._append(result, **kwargs)
             return result
 
+    def cross_value(self, a=None, value=None, above=True, asint=True, offset=None, **kwargs):
+        if a is None and value is None: return self._df
+        else:
+            a = self._get_column(a, f"{a}")
+            result = cross(series_a=a, value=value, above=above, asint=asint, offset=offset, **kwargs)
+            self._add_prefix_suffix(result, **kwargs)
+            self._append(result, **kwargs)
+            return result
+
 
 
     # Volatility Indicators