PR: Move debug cell / file / config to Debugger plugin

[impact27]

Description of Changes

• Wrote at least one-line docstrings (for any new functions)
• Added unit test(s) covering the changes (if testable)

• Included a screenshot or animation (if affecting the UI, see Licecap)

Issue(s) Resolved

Fixes #

Affirmation

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I affirm the Developer Certificate of Origin
with respect to all commits and content included in this PR,
and understand I am releasing the same under Spyder's MIT (Expat) license.

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[pep8speaks]

Hello @impact27! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file spyder/plugins/debugger/confpage.py:

Line 85:80: E501 line too long (89 > 79 characters)

Comment last updated at 2022-08-30 20:49:46 UTC

[ccordoba12]

Thanks a lot @impact27 for your help with this!

[ccordoba12]

Second round of reviews for you @impact27.

[ccordoba12]

Last review @impact27, then this should be ready.

[ccordoba12]

Thanks @impact27!