Figure.shift_origin: Revert back to the original plotting origin using a context manager

[seisman]

Description of proposed changes

New syntax:

# permanently shift the plotting origin
Figure.shift_origin(xshift="1c")  

# temporarily shift the plotting origin
with Figure.shift_origin(xshift="1c"):
    ...
    ...

Address #2401

Reminders

• Run make format and make check to make sure the code follows the style guide.
• Add tests for new features or tests that would have caught the bug that you're fixing.
• Add new public functions/methods/classes to doc/api/index.rst.
• Write detailed docstrings for all functions/methods.
• If wrapping a new module, open a 'Wrap new GMT module' issue and submit reasonably-sized PRs.
• If adding new functionality, add an example to docstrings or tutorials.
• Use underscores (not hyphens) in names of Python files and directories.

Slash Commands

You can write slash commands (/command) in the first line of a comment to perform
specific operations. Supported slash commands are:

• /format: automatically format and lint the code
• /test-gmt-dev: run full tests on the latest GMT development version

[github-actions]

Summary of changed images

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

Status	Path
renamed	pygmt/tests/baseline/test_figure_shift_origin.png -> pygmt/tests/baseline/test_shift_origin.png

Image diff(s)

Added images

Modified images

Path	Old	New

Report last updated at commit eab6adc

[github-actions]

Summary of changed images

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

Status	Path
renamed	pygmt/tests/baseline/test_figure_shift_origin.png -> pygmt/tests/baseline/test_shift_origin.png

Image diff(s)

Added images

Modified images

Path	Old	New

Report last updated at commit 9f4ca3e