Feature/budget

[K-w-e]

I'm sending you the pull request for the implementation of the Budgets feature, just to keep you informed about the direction I took during development.

Some points of attention already known:

• I removed the "Add category budget" button from the planning page. Now, if you want to modify the budgets, you need to press "Manage." (I did this for both simplicity and because the flow to follow by pressing that button was not clear).
• I added the ability to delete the budget via swipe. In the UI, there was both that option and the option through a "-" button next to the budget. We need to decide which one to keep.
• When you add a new budget or modify an existing one, provide the option to select only the categories that are not already present. This should be easy to fix, but I haven't found a clean way to do it yet.

For any doubts, questions, or suggestions, feel free to reach out!

[federicopozzato]

@mikev-cw @K-w-e thanks for pointing out those things! The redundancy of the actions has been done on purpose, to give the user more freedom, even though I understand what you say about too many actions, and you may be right. For semplicity let's keep it in the way you did, it's fine!

[K-w-e]

PR updated! That file with conflicts is caused by the fact that that widget has been rearranged and almost completely modified, I don't think I can resolve it myself. You should accept the changes from my branch through the PR.

Let me know if i can help

@theperu