Closes #7258: Add self hosted font to metatag generator

[Miraeld]

Description

Fixes #7258

Self hosted google fonts will be added to the meta tag of enabled features.

Type of change

• Enhancement (non-breaking change which improves an existing functionality).

Detailed scenario

Refer to the issue.

Technical description

Documentation

This pull request includes significant refactoring and improvements to the get_meta_tag method in the Meta.php file. The changes focus on simplifying the code, improving readability, and enhancing the feature mapping for meta tags.

Key changes include:

Code Simplification and Readability Improvements:

• Refactored the method to use a more readable and maintainable structure by introducing the $features_to_check array for feature mapping.
• Simplified the logic for checking and adding features to the $features array, reducing redundancy and improving clarity.

Feature Enhancements:

• Added a new feature mapping mechanism for meta tags, allowing easier addition and management of features.
• Improved the handling of mobile/desktop caching and CDN & DNS prefetch checks by streamlining the conditions and making the code more concise.

Meta Tag Generation:

• Modified the meta tag generation to use sprintf for better readability and maintainability.
• Ensured that the WP Rocket version inclusion is handled through a filter, maintaining flexibility and configurability.

New dependencies

None

Risks

None

Mandatory Checklist

Code validation

• I validated all the Acceptance Criteria. If possible, provide screenshots or videos.
• I triggered all changed lines of code at least once without new errors/warnings/notices.
• I implemented built-in tests to cover the new/changed code.

Code style

• I wrote a self-explanatory code about what it does.
• I protected entry points against unexpected inputs.
• I did not introduce unnecessary complexity.
• Output messages (errors, notices, logs) are explicit enough for users to understand the issue and are actionnable.

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.00% (target: -0.10%)	✅ 94.74% (target: 50.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (5b018e4)	38787	17157	44.23%
Head commit (078e1cd)	38791 (+4)	17160 (+3)	44.24% (+0.00%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#7269)	19	18	94.74%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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