[FEATURE] Allow grouped transaction, one amount, split into multiple accounts

[SscSPs]

Please confirm the following:

• [X] I've checked the current issues for duplicate issues.
• [X] I've requested a single (only one) feature/change in this issue. It complies with the One Request Per GitHub Issue (ORPGI) rule.
• [X] My issue is well-defined and describes how it should be implemented from UI/UX perspective.

What do you want to be added or improved?

As a user I want to add one transaction that can adjust amount to 2 or more accounts, for all types, expense, income and transfers.

Why do you need it?

This is needed to support cases where I make payments to a single business, but from different accounts. for example

1. £100 from cash and £300 from my bank account to a shop for my bike repair.
2. £150 from one bank account and £200 from another to repay a credit card statement.
3. I receive £20 cash and £50 in bank from a friend for something they buy from me.

How do you imagine it?

A new button can be added on the add transaction page to enable multi account mode, and we can add ammount for each account as needed, for paying side as well as receiving side

[ivywallet]

Thank you @SscSPs for raising Issue #3635! 🚀 What's next? Read our Contribution Guidelines 📚.

Tagging @ILIYANGERMANOV for review & approval 👀