Custom fields in category entity

[PheysX]

1. Why is this change necessary?

At the moment, its not possible to create custom fields for the category entity.

2. What does this change do, exactly?

• Added custom field twig template and js logic to the shopware component sw-category
• Added the category to the entityNameStore in the custom-field.service

3. Describe each step to reproduce the issue or behaviour.

4. Please link to the relevant issues (if any).

#278

5. Checklist

• I have written tests and verified that they fail without my change
• I have squashed any insignificant commits
• I have written or adjusted the documentation according to my changes
• This change has comments for package types, values, functions, and non-obvious lines of code
• I have read the contribution requirements and fulfil them.

[raknison]

Hi, @PheysX.
Thank you for your contribution. I will check you PR soon.

[shopwareBot]

Hello,

thank you for creating this pull request.
I have opened an issue on our Issue Tracker for you. See the issue link: https://issues.shopware.com/issues/NEXT-5505

Please use this issue to track the state of your pull request.

[raknison]

Hi @PheysX,

could you rebase your pull request and squash your commits please.
We made some changes to the file structure.

Thank you!

[mitelg]

thanks for your contribution @PheysX 👍 🎉 💙

[PheysX]

Thanks for restructure my commits <3