Add ability to delete Transactions

[brenoaquino]

It would be nice to be able to delete added transactions, especially for situations where duplicates were added.

And congratulations on the project, it looks very robust and useful when the features become available (especially dark mode)

[zachgoll]

@BrenoAquino I agree with this. I'll kick off some designs for this internally and update this issue with a Figma file when it's ready.