Improve the enqueueing of JS scripts and styles

[iamdharmesh]

Description of the Change

As reported in #144, the plugin was using PHP files to serve JavaScript and CSS in some places. This PR fixes the issue by properly enqueueing JavaScript scripts and styles.

Closes #144

How to test the Change

Make sure the following features work as expected:

• Form submission
• Date picker
• Form styles
• Applied custom styles (Note: This is for backward compatibility only, we no longer support this feature.)

Changelog Entry

Changed - Improved the enqueueing of JavaScript scripts and styles.

Credits

Props @iamdharmesh

Checklist:

• I agree to follow this project's Code of Conduct.
• I have updated the documentation accordingly.
• I have added tests to cover my change.
• All new and existing tests pass.

[qasumitbagthariya]

QA Update ✅

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I have verified this PR in the enhancement/341 branch, which has been fixed and is functioning as intended.

I tested the following on this branch:

• Form submission
• Date picker

Form Submission

Widget

Shortcode

Date Picker

Screen.Recording.2025-05-26.at.3.09.58.PM.mov

Testing Environment

• WordPress: 6.8
• Theme: Storefront 4.6.1
• Theme: Twenty Twenty-Four 1.3
• PHP: 8.0.30
• Web Server: Nginx 1.20.2
• Browser: Chrome
• OS: macOS 15.2
• Branch: enhancement/144

Steps to Test- As mentioned in the PR description.
Test Results - It is working as expected.
Functional Demo / Screencast -
Special Notes - Ready for code UAT
Testing Document status:
Cases related to this Issue/PR are added to the Critical Flow Wiki pages:

• Yes
• Not Required/Applicable for this PR

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