Deprecating legacy plot API

[tl3119]

Describe your changes

Showed depcrecation warnings message for plot API

Issue number

Closes #513

Checklist before requesting a review

• Performed a self-review of my code
• Formatted my code with pkgmt format
• Added tests (when necessary).
• Added docstring documentation and update the changelog (when needed)

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📚 Documentation preview 📚: https://jupysql--669.org.readthedocs.build/en/669/quick-start.html

[edublancas]

make the warnings more specific

.plot() this one will be generic as there is no equivalent: .plot() will be removed in a future version. If you need help migrating, send us a message: https://ploomber.io/community

.bar(): .bar() will be removed in a future version, please use %sqlplot bar. If you need help migrating, send us a message: https://ploomber.io/community

.pie(): .bar() will be removed in a future version, please use %sqlplot pie. If you need help migrating, send us a message: https://ploomber.io/community

[tl3119]

make the warnings more specific

.plot() this one will be generic as there is no equivalent: .plot() will be removed in a future version. If you need help migrating, send us a message: https://ploomber.io/community

.bar(): .bar() will be removed in a future version, please use %sqlplot bar. If you need help migrating, send us a message: https://ploomber.io/community

.pie(): .bar() will be removed in a future version, please use %sqlplot pie. If you need help migrating, send us a message: https://ploomber.io/community

Update it now

[edublancas]

is this ready @tl3119 ? don't forget to re-request a review when ready

[tl3119]

is this ready @tl3119 ? don't forget to re-request a review when ready

Yes, got it. This is ready now.

[yafimvo]

@tl3119 Can you please add 3 tests that check the warning message?

[tl3119]

@tl3119 Can you please add 3 tests that check the warning message?

Sure, I have added the tests now.