Add payment details

[defkev]

Description

New required field called Payment

New Payment Details text area, use it to add your bank account(s), digital payment options (PayPal, Crypto, etc.) or other payment related info.

Can be pre-populated under Settings -> Invoice -> Payment Settings: Details

Will be displayed along with the company info under your Tax ID (if enabled) Supports both templates.

Translation included for English and German

Related Issue

86 and #280

Picks up adcat's proposal but with a more general approach.

Motivation and Context

You absolutely want your customers to know how to pay you.

How Has This Been Tested?

Manually, most definitely won't pass Travis. Travis

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.
• [ ] I have included a migration scheme (If type of change is breaking change)

[hql287]

@defkev Thanks for the PR. Please fix the errors in specified in the CI log.

[hql287]

@defkev Thanks for the PR. Please fix the broken test then I can merge it.

[defkev]

At last