Performance API demo

[raveenita]

Description

Implements Performance API demo with the ´getEntriesByType´ examples

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce.

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Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

Related issue: #130

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Name	Status	Preview	Comments	Updated (UTC)
webapis-playground	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 28, 2024 11:02pm

[raveenita]

the others interface basically represents the PerformanceEntry with differents entryType.
But if you think we should add more in the demo, just let me know @atapas