Add a standalone "pygmt.Figure.errorbar" method

[yvonnefroehlich]

Description of the desired feature

pygmt.Figure.plot allows to add errorbars to data points. The current syntax for the error_bar parameter is:

[x|y|X|Y][+a|A][+cl|f][+n][+wcap][+ppen]

However, a standalone pygmt.Figure.errorbar method seems more Pythonic and userfriedly.

First suggested by @seisman in #2429 (comment):

Maybe we should add a standalone Figure.errorbar() method, like https://matplotlib.org/stable/api/_as_gen/matplotlib.axes.Axes.errorbar.html.

Related to PR #2429

Are you willing to help implement and maintain this feature?

No