[ENH]: align_titles #22376
Description
Problem
There's align_xlabels and align_ylabels to align the x and y labels, but no align_titles; this would be useful e.g. for
from pylab import *
fig, axs = subplots(1, 2, subplot_kw={"xlabel": "x", "ylabel": "y", "title": "t"})
axs[0].imshow(zeros((3, 5)))
axs[1].imshow(zeros((5, 3)))
fig.align_labels()
Proposed solution
Add Figure.align_titles.