feat($layout/page.swig): cutstom new layout of page

[jingxinxin]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines.
• Tests for the changes was maked (for bug fixes / features).
  • Muse | Mist have been tested.
  • Pisces | Gemini have been tested.
• Docs in NexT website have been added / updated (for features).

PR Type

What kind of change does this PR introduce?

• Bugfix.
• Feature.
• Code style update (formatting, local variables).
• Refactoring (no functional changes, no api changes).
• Build related changes.
• CI related changes.
• Documentation content changes.
• Other... Please describe:

What is the current behavior?

Cutstom new layout of page

Issue resolved: N/A

What is the new behavior?

Cutstom new layout of page

• Screenshots with this changes: N/A
• Link to demo site with this changes: N/A

How to use?

In NexT _config.yml:

custom_file_path:
    page:
      url: source/_data/study.swig
      type: study
      script: study.js
...

Does this PR introduce a breaking change?

• Yes.
• No.

[welcome]

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[1v9]

Implementing only one custom page type is not good.
Support more custom page types or create a new page type completely.
Also you need to sign upstairs CLA and prepare docs for this feature.

[stevenjoezhang]

This feature seems unnecessary...

[jingxinxin]

Implementing only one custom page type is not good.
Support more custom page types or create a new page type completely.
Also you need to sign upstairs CLA and prepare docs for this feature.

@1v9 yep，It's just a sudden idea I had when I was expanding the page, and I immediately came up with it. Customizing multiple pages is definitely needed.
@stevenjoezhang Mainly I want to ensure the purity of the original library. I don't want to modify the files in theme path.
At the same time, I can also expand the pages.

[stevenjoezhang]

@jingxinxin We can use a survey to determine how many users need this feature. People who aren't as good at programming as you are may be confused by this feature.

[stevenjoezhang]

Thanks for your contributing. Custom new layout of page is a high-end feature that requires a lot of template changes to allow users to implement their ideas. There is no point in trying to use a generic solution.