Add Toml support

[naltatis]

Describe the problem

We use toml as a translation format that we use in JavaScript and Go but toml is not in the list of supported translation file formats.

Describe the solution you'd like

Official support for toml file format.

Describe alternatives you've considered

Currently we have a workaround in our project by using the "INI format" which is similar but not identical to toml. Our main issues with this workarounds are:

• String termination: In toml strings are quoted ("), in ini it's possible but not mantedory. That's why our translators have to be careful to always start and end with a quote. Otherwise it will produce broken toml files.
• Escaping: We notices strange issues where Weblate hat problems with special characters and removed/double escaped them. Example: "Lorem ... ;)". see here

Screenshots

Our issues with ini format workaround

Additional context

No response

[nijel]

Is there any documentation for the toml format you are using?

[github-actions]

The issue you've reported needs to be addressed in the translate-toolkit. Please file the issue there, and include links to any relevant specifications about the formats (if applicable).

[github-actions]

This issue has been added to the backlog. It is not scheduled on the Weblate roadmap, but it eventually might be implemented.

In case you need this feature soon, please consider helping or push it by funding the development.

[nijel]

There already is translate/translate#3969