BREAKING: Support typesetting apostrophe (') and backtick (`)

[seisman]

See #3476 for context.

As explained in #3476, currently, we can't typeset the original apostrophes and backticks because they're mapped to ‘’ in PostScript. This PR adds the patch to support typesetting apostrophes and backticks.

Please note that this is a breaking change. The main motivation of this PR is to ensure what you type is what you get (WYTIWIG, similar to WYSIWIG). So I think it's breaking things in a good way.

See the script and images below for the changes:

import pygmt

chars = "A ` ' ‘ ’ \" “ ” B"
fig = pygmt.Figure()
fig.basemap(
    projection="X4c/2c", region=[0, 4, 0, 2], frame=["WSen", f"x+l{chars}"]
)
fig.text(x=2, y=1, text=chars, font="20p")
fig.show()

Main branch	This PR

Fixes #3476.

[github-actions]

Summary of changed images

This is an auto-generated report of images that have changed on the DVC remote

Status	Path
modified	pygmt/tests/baseline/test_text_quotation_marks.png

Image diff(s)

Added images

Modified images

Path	Old	New
test_text_quotation_marks.png

Report last updated at commit 045548c

[yvonnefroehlich]

Just a few minor formulation suggestions.