feat:add custom twitter_card selection

[BrotherJie]

I found that every page' s twitter_card attribute is 'summary', so I make it Customizable。

The code changes are similar to the PR I submitted last time

Summary by CodeRabbit

• New Features

  • Enhanced handling of the twitter_card property in Open Graph meta tags.
  • Introduced a variable for dynamic assignment of the twitter_card value.

• Bug Fixes

  • Added a deprecation warning for the open_graph property to guide users towards the new format.

• Style

  • Improved formatting and whitespace consistency in the _config.yml file.

[coderabbitai[bot]]

📝 Walkthrough

Walkthrough

The changes in this pull request involve formatting and whitespace adjustments in the _config.yml file of the Hexo theme, enhancing YAML consistency without altering functionality. Additionally, the layout/components/header/head.ejs file has been modified to improve the handling of the twitter_card property in Open Graph meta tags. A new variable captures the value of page.twitter_card, and a deprecation warning is introduced for the open_graph property when set to true. Overall, these changes focus on readability and maintainability.

Changes

File Path	Change Summary
_config.yml	Removed trailing spaces for keys and values in defaults, global, footer, inject, and plugins sections for improved formatting.
layout/components/header/head.ejs	Introduced let twitterCard to capture page.twitter_card value, replacing hardcoded 'summary'. Added deprecation warning for open_graph property.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant EJS Template
    participant OpenGraph

    User->>EJS Template: Request page
    EJS Template->>OpenGraph: Check twitter_card
    OpenGraph-->>EJS Template: Return twitter_card value
    EJS Template->>User: Render page with Open Graph meta tags

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[EvanNotFound]

Everything is good except that I don't like your formatted config.yml. Can you please revert it? Thanks!