Fix: avoid useless loading of scripts

[AleTorrisi]

Proposed changes

Added a code to load conditionally bulk image optimizer scripts according the page which is loaded, and the admin style only in case visit the plugin panel page.

Type of Change

Production

• Bugfix (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)
• Dependency update
• Refactoring / housekeeping (changes to files not directly related to functionality)

Development

• Tests
• Dependency update
• Environment update / refactoring
• Documentation Update

Video

Checklist

• I have read the CONTRIBUTING doc
• I have viewed my change in a web-browser
• Linting and tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

[circlecube]

This looks good.

My only suggestion would be to consider using an allowed list rather than an excluded list of pages. There are probably fewer pages for the allow list and we can be sure that over time that this is easier to manage.

[AleTorrisi]

@circlecube thanks for your suggestion. Before creating the pull request I discussed about that with @arunshenoy99 and we agree that set a list of pages where include the script is risky because the image optimized feature works on media library and it could be managed by a third-part plugins which works outside the list of pages declared.
At the moment I put a list of pages where it's very unlikely that it happens, allowing usage of script elsewhere.
I remain at your disposal

[arunshenoy99]

The code looks good to me. Will get this QA’d once before merging. Thanks!