Create Allow positioning of text inside TextBox

Author: Tortar

doc/users/next_whats_new/Allow positioning of text inside TextBox

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+Text can be positioned inside TextBox widget
+---------------------
+
+A new parameter called ``textalignment`` can be used to control for the position of the text inside the Axes of the TextBox widget. By default it is set to ``"left"``.
+
+For example a textbox with the property set to "center" can be created through
+
+``
+
+from matplotlib import pyplot as plt
+from matplotlib.widgets import TextBox
+
+Box_input = plt.axes([0.2, 0.2, 0.1, 0.075])
+text_box = TextBox(ax = Box_input, textalignment = "center" )
+
+``